{"id":36776,"date":"2025-04-28T12:25:19","date_gmt":"2025-04-28T10:25:19","guid":{"rendered":"https:\/\/ecol.eu\/en\/knowledge-base\/"},"modified":"2025-07-07T12:17:52","modified_gmt":"2025-07-07T10:17:52","slug":"how-to-read-engine-oil-labels-the-technical-basics-of-engine-oil-selection","status":"publish","type":"post","link":"https:\/\/ecol.eu\/en\/knowledge-base\/how-to-read-engine-oil-labels-the-technical-basics-of-engine-oil-selection","title":{"rendered":"How to read engine oil labels? The technical basics of engine oil selection."},"content":{"rendered":"<header class=\"page-hero alignwide\">\n  <div class=\"container\">\n    <div class=\"row\">\n      <div class=\"col-lg-7 offset-lg-1 page-hero__text\">\n\n        <nav aria-label=\"Okruszki\" role=\"navigation\">\n  <ul class=\"breadcrumbs\" aria-label=\"lista okruszk\u00f3w\">\n\n    \n      <li class=\"breadcrumbs__item\">\n\n                  <a href=\"https:\/\/ecol.eu\/en\/\" class=\"breadcrumbs__link\">Home page<\/a>\n        \n      <\/li>\n\n    \n  <\/ul>\n<\/nav>\n\n        <h1 class=\"heading heading--sb\">How to read engine oil labels? The technical basics of engine oil selection.<\/h1>\n\n                  <p class=\"desc\"> This article provides a&nbsp;detailed overview of the classification of engine oils in the context of two key parameters that determine their operational suitability: viscosity properties and quality standards.<\/p>\n        \n      <\/div>\n\n      <ul class=\"col-lg-7 offset-lg-1 links\" data-links><\/ul>\n\n    <\/div>\n\n    \n      <svg class=\"page-hero__bg page-hero__bg--diagnostics\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xml:space=\"preserve\" width=\"122.057mm\" height=\"171.64mm\" version=\"1.1\" style=\"shape-rendering:geometricPrecision; text-rendering:geometricPrecision; image-rendering:optimizeQuality; fill-rule:evenodd; clip-rule:evenodd\"\r\nviewBox=\"0 0 13001.94 18283.7\"\r\n xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\">\r\n <defs>\r\n  <style type=\"text\/css\">\r\n    .str1 {stroke:#1D1D1B;stroke-width:11.27;stroke-miterlimit:22.9256}\r\n    .str0 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ability to flow over different temperature ranges, as described by the SAE (Society of Automotive Engineers) standard. The current SAE J300 specification divides oils into winter grades (denoted by the letter \u2018W\u2019 \u2013\u00a0Winter) and summer grades, which makes it possible to precisely determine the oil\u2019s behaviour both during cold starts and when the engine is operating under full thermal load.<\/p>\n<p class=\"post__paragraph\">The winter grades (0W, 5W, 10W, 15W, 20W, 25W) specify the minimum temperature at which the oil retains sufficient fluidity for effective lubrication at start-up. The lower the number in front of the \u2018W\u2019, the better the oil\u2019s properties at low temperatures.<\/p>\n\n\t\t\t\t\t\t\t      <\/div>\n\t\t\t\t\t\t      \t\t\t\t\t      <\/div>\n                \n          \n        \n      <\/article>\n    <\/div>\n  <\/div>\n<\/section>\n\n\n\n<div style=\"height:33px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"739\" height=\"533\" src=\"https:\/\/ecol.eu\/wp-content\/uploads\/2025\/04\/SAE_GRAFIKA_ECOL.png\" alt=\"\" class=\"wp-image-37780\" style=\"width:613px;height:auto\" srcset=\"https:\/\/ecol.eu\/wp-content\/uploads\/2025\/04\/SAE_GRAFIKA_ECOL.png 739w, https:\/\/ecol.eu\/wp-content\/uploads\/2025\/04\/SAE_GRAFIKA_ECOL-300x216.png 300w\" sizes=\"auto, (max-width: 739px) 100vw, 739px\" \/><figcaption class=\"wp-element-caption\">Fig. 1 SAE class designation<\/figcaption><\/figure>\n<\/div>\n\n\n<div style=\"height:33px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<section class=\"editor alignwide\">\n  <div class=\"container\">\n    <div class=\"row\">\n      <article class=\"offset-lg-2 col-xl-9 col-lg-10 editor__text\">\n\n        \n          \n            \n\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t      \n\t\t\t\t\t\t      \t\t\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t\t\t      <p class=\"post__paragraph\">Summer grades (20, 30, 40, 50, 60) refer to the kinematic viscosity measured at 100\u00b0C and provide information about the oil\u2019s shear resistance and its ability to maintain a\u00a0stable lubricating film under high heat load conditions. Choosing the right SAE grade is important for engine protection, efficiency and fuel consumption \u2013\u00a0especially under extreme conditions.<\/p>\n\n\t\t\t\t\t\t\t      <\/div>\n\t\t\t\t\t\t      \t\t\t\t\t      <\/div>\n                \n          \n        \n      <\/article>\n    <\/div>\n  <\/div>\n<\/section>\n\n\n\n<div style=\"height:33px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"490\" height=\"348\" src=\"https:\/\/ecol.eu\/wp-content\/uploads\/2023\/04\/tab1eng.png\" alt=\"\" class=\"wp-image-36781\" srcset=\"https:\/\/ecol.eu\/wp-content\/uploads\/2023\/04\/tab1eng.png 490w, https:\/\/ecol.eu\/wp-content\/uploads\/2023\/04\/tab1eng-300x213.png 300w\" sizes=\"auto, (max-width: 490px) 100vw, 490px\" \/><\/figure>\n<\/div>\n\n\n<div style=\"height:33px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<section class=\"editor alignwide\">\n  <div class=\"container\">\n    <div class=\"row\">\n      <article class=\"offset-lg-2 col-xl-9 col-lg-10 editor__text\">\n\n        \n          \n            \n\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t      \n\t\t\t\t\t\t      \t\t\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t\t\t      <h3 class=\"post__header heading heading--line\"> American Petroleum Institute classification<\/h3>\n<p class=\"post__paragraph\"> The API (American Petroleum Institute) develops and regularly updates quality standards for engine oils, which form the basis for assessing their suitability for different types of internal combustion engines. The API classification divides oils into two main groups:<\/p>\n<ul class=\"post__list post__list--nonordered\">\n<li class=\"post__list-item\"> \u201cS\u201d (Service) series \u2013\u00a0designed for spark-ignition engines, i.e. petrol units,\n<\/li>\n<li class=\"post__list-item\">\u201cC\u201d series (Commercial) \u2013\u00a0used in compression-ignition engines, i.e. diesel (diesel) engines, often operating under heavy-duty conditions.\n<\/li>\n<\/ul>\n\n\t\t\t\t\t\t\t      <\/div>\n\t\t\t\t\t\t      \t\t\t\t\t      <\/div>\n                \n          \n        \n      <\/article>\n    <\/div>\n  <\/div>\n<\/section>\n\n\n\n<div style=\"height:33px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1155\" height=\"780\" src=\"https:\/\/ecol.eu\/wp-content\/uploads\/2025\/04\/API_GRAFIKA_ECOL3.png\" alt=\"\" class=\"wp-image-37785\" style=\"width:622px;height:auto\" srcset=\"https:\/\/ecol.eu\/wp-content\/uploads\/2025\/04\/API_GRAFIKA_ECOL3.png 1155w, https:\/\/ecol.eu\/wp-content\/uploads\/2025\/04\/API_GRAFIKA_ECOL3-300x203.png 300w, https:\/\/ecol.eu\/wp-content\/uploads\/2025\/04\/API_GRAFIKA_ECOL3-1024x692.png 1024w, https:\/\/ecol.eu\/wp-content\/uploads\/2025\/04\/API_GRAFIKA_ECOL3-768x519.png 768w\" sizes=\"auto, (max-width: 1155px) 100vw, 1155px\" \/><figcaption class=\"wp-element-caption\">Fig. 2 API class designation<\/figcaption><\/figure>\n<\/div>\n\n\n<div style=\"height:33px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<section class=\"editor alignwide\">\n  <div class=\"container\">\n    <div class=\"row\">\n      <article class=\"offset-lg-2 col-xl-9 col-lg-10 editor__text\">\n\n        \n          \n            \n\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t      \n\t\t\t\t\t\t      \t\t\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t\t\t      <ul class=\"post__list post__list--nonordered\">\n<li class=\"post__list-item\">The current most advanced API standard for spark-ignition engines (\u2018S\u2019 series) is the API SP grade. This specification has been developed for modern powertrains and takes into account, among other things: increased ability of the oil to hold pollutants in suspension, improved compatibility with emission reduction systems (such as tri-functional catalytic converters), reduced fuel consumption and more effective protection against low-speed knocking (LSPI \u2013\u00a0Low Speed Pre-Ignition).\n<\/li>\n<li class=\"post__list-item\">For compression-ignition engines, the latest API CK-4 and FA-4 standards include properties that ensure a\u00a0higher level of harmful emissions reduction, catalyst protection, proper functioning of the exhaust gas recirculation (EGR) system, prevention of particulate filter (DPF, FAP, etc.) clogging, and reduction of engine wear.\n<p class=\"post__paragraph\">The CK-4 standard is backward-compatible, ultimately replacing CJ-4, meets the emission standards for model year 2017 and earlier.<\/p>\n<p>API FA-4, not backward-compatible, also meets the 2017 model year emission standards and is characterized by lower HTHS (High-Temperature High-Shear) viscosity under high temperature and shear conditions, resulting in greater fuel efficiency.\n<\/p><\/li>\n<\/ul>\n\n\t\t\t\t\t\t\t      <\/div>\n\t\t\t\t\t\t      \t\t\t\t\t      <\/div>\n                \n          \n        \n      <\/article>\n    <\/div>\n  <\/div>\n<\/section>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"455\" height=\"235\" src=\"https:\/\/ecol.eu\/wp-content\/uploads\/2025\/04\/tab2eng-aktual-1.png\" alt=\"\" class=\"wp-image-37167\" srcset=\"https:\/\/ecol.eu\/wp-content\/uploads\/2025\/04\/tab2eng-aktual-1.png 455w, https:\/\/ecol.eu\/wp-content\/uploads\/2025\/04\/tab2eng-aktual-1-300x155.png 300w\" sizes=\"auto, (max-width: 455px) 100vw, 455px\" \/><\/figure>\n<\/div>\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<section class=\"editor alignwide\">\n  <div class=\"container\">\n    <div class=\"row\">\n      <article class=\"offset-lg-2 col-xl-9 col-lg-10 editor__text\">\n\n        \n          \n            \n\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t      \n\t\t\t\t\t\t      \t\t\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t\t\t      <h3 class=\"post__header heading heading--line\">ACEA standard \u2013\u00a0the European equivalent of the API classification<\/h3>\n<p class=\"post__paragraph\">The European equivalent of the API classification is the ACEA (Association des Constructeurs Europ\u00e9ens d\u2019Automobiles) standard. This system classifies lubricants according to the type of engine, its design and the exhaust after-treatment systems used, taking into account the specific performance requirements of engines operating under European conditions.<\/p>\n\n\t\t\t\t\t\t\t      <\/div>\n\t\t\t\t\t\t      \t\t\t\t\t      <\/div>\n                \n          \n        \n      <\/article>\n    <\/div>\n  <\/div>\n<\/section>\n\n\n\n<div style=\"height:33px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"623\" height=\"239\" src=\"https:\/\/ecol.eu\/wp-content\/uploads\/2025\/04\/tab3eng-aktual.png\" alt=\"\" class=\"wp-image-37172\" srcset=\"https:\/\/ecol.eu\/wp-content\/uploads\/2025\/04\/tab3eng-aktual.png 623w, https:\/\/ecol.eu\/wp-content\/uploads\/2025\/04\/tab3eng-aktual-300x115.png 300w\" sizes=\"auto, (max-width: 623px) 100vw, 623px\" \/><\/figure>\n<\/div>\n\n\n<div style=\"height:33px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<section class=\"editor alignwide\">\n  <div class=\"container\">\n    <div class=\"row\">\n      <article class=\"offset-lg-2 col-xl-9 col-lg-10 editor__text\">\n\n        \n          \n            \n\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t      \n\t\t\t\t\t\t      \t\t\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t\t\t      <p class=\"post__paragraph\">Among the oils classified according to the ACEA standard, the most commonly used are:<\/p>\n<ul class=\"post__list post__list--nonordered\">\n<li class=\"post__list-item\">A5\/B5 \u2013\u00a0used in spark-ignition (A) and compression-ignition (B) engines; these are oils designed for units operating under high load conditions and requiring extended change intervals. They are characterised by reduced viscosity, which helps to reduce internal resistance and fuel consumption.<\/li>\n<li class=\"post__list-item\">C4 \u2013\u00a0oils dedicated to vehicles equipped with advanced exhaust after-treatment systems, such as diesel particulate filters (DPF) and exhaust gas recirculation (EGR) systems. They are used in heavily loaded diesel engines in passenger cars and light commercial vehicles.<\/li>\n<li class=\"post__list-item\">E9 \u2013\u00a0designed for modern heavy-duty diesel engines meeting Euro I-V emission standards. These oils are distinguished by their excellent dispersant properties and keep the crank-piston system clean while complying with exhaust after-treatment systems.\n<\/li>\n<\/ul>\n\n\t\t\t\t\t\t\t      <\/div>\n\t\t\t\t\t\t      \t\t\t\t\t      <\/div>\n                \n          \n        \n      <\/article>\n    <\/div>\n  <\/div>\n<\/section>\n\n\n<section class=\"editor alignwide\">\n  <div class=\"container\">\n    <div class=\"row\">\n      <article class=\"offset-lg-2 col-xl-9 col-lg-10 editor__text\">\n\n        \n          \n            \n\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t      \n\t\t\t\t\t\t      \t\t\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t\t\t      <h2 class=\"post__header heading heading--line\"> worth remembering<\/h2>\n<ul class=\"post__list post__list--nonordered\">\n<li class=\"post__list-item\">The viscosity of the engine oil is determined by the SAE classification \u2013\u00a0the lower the winter number (e.g. 0W), the better the oil\u2019s fluidity at low temperatures; summer grades (e.g. SAE 40) indicate the oil\u2019s behaviour at high operating temperatures.<\/li>\n<li class=\"post__list-item\"> The API divides oils into two main groups:\n<p>\u2022 \u201cS\u201d \u2013\u00a0for petrol engines (spark ignition)<br>\n\u2022 \u201cC\u201d \u2013\u00a0for diesel engines (compression ignition)<\/p>\n<p class=\"post__paragraph\">The latest grades, such as API SP and CJ-4, take into account advanced requirements for emissions, engine protection and compatibility with exhaust after-treatment systems.<\/p><\/li>\n<li class=\"post__list-item\">ACEA is a\u00a0European classification system that takes into account the engine type, design and technology used (e.g. DPF, EGR).<\/li>\n<p class=\"post__paragraph\">The most common classes are:<\/p>\n<p>\u2022  A5\/B5 \u2013\u00a0for engines with extended change intervals, low viscosity, fuel economy\n<\/p><p>\u2022  C4 \u2013\u00a0compatible with DPF and EGR systems\n<\/p><p>\u2022 E9 \u2013\u00a0for heavy duty engines complying with Euro emission standards\n<\/p><li class=\"post__list-item\">The selection of the right oil should always take into account both the viscosity class (SAE) and the quality requirements (API, ACEA), according to the engine manufacturer\u2019s specifications.<\/li>\n<\/ul>\n\n\t\t\t\t\t\t\t      <\/div>\n\t\t\t\t\t\t      \t\t\t\t\t      <\/div>\n                \n          \n        \n      <\/article>\n    <\/div>\n  <\/div>\n<\/section>\n\n\n<section class=\"contact-persons alignwide\">\n  <div class=\"container\">\n    <div class=\"row\">\n\n      <div class=\"offset-lg-2 offset-md-0 col-lg-8\">\n\n        \n          <h2 class=\"heading heading--line\"> contact with the author<\/h2>\n\n        \n        \n          <h3 class=\"heading heading--large\">Pawe\u0142 Pyszny<\/h3>\n\n        \n        \n          <p class=\"desc\">The article was prepared by Pawe\u0142 Pyszny, junior diagnostics specialist at Ecol Ltd.\r\n<\/p>\n\n        \n 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11.6596 14 10.9539V4.68677C13.9695 4.70957 13.9385 4.73175 13.9066 4.75299L8.17001 8.57754Z\" fill=\"black\"\/>\n    <path d=\"M0.548242 4.07039L6.28504 7.89507C6.50221 8.03985 6.75109 8.11223 6.99997 8.11223C7.24888 8.11223 7.49779 8.03982 7.71496 7.89507L13.4518 4.07039C13.7951 3.84166 14 3.45884 14 3.04568C14 2.33526 13.422 1.75732 12.7116 1.75732H1.28836C0.577965 1.75735 0 2.33529 0 3.04636C0 3.45884 0.204969 3.84166 0.548242 4.07039Z\" fill=\"black\"\/>\n  <\/g>\n  <defs>\n    <clipPath id=\"clip0_447_7182\">\n      <rect width=\"14\" height=\"14\" fill=\"white\"\/>\n    <\/clipPath>\n  <\/defs>\n<\/svg>\np.pyszny@ecol.eu<\/a>\n\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t\n            <\/li>\n\n          \n        <\/ul>\n\n      \n    <\/div>\n  <\/div>\n<\/section>\n\n\n<section class=\"faq alignwide\">\n  <div class=\"faq__grid\">\n    <div class=\"faq__column faq__column--left\">\n      <div class=\"container\">\n        <div class=\"row\">\n          <div class=\"offset-lg-2 offset-md-0 col-xl-6 col-lg-10 faq__text\">\n\n            \n              <h2 class=\"heading heading--line\">FAQ<\/h2>\n\n            \n            \n              <p class=\"desc\"> motor oils &#8211;&nbsp;frequently asked questions\r\n<\/p>\n\n            \n          <\/div>\n\n          <div class=\"offset-xl-1 offset-lg-2 offset-md-0 col-xl-6 col-lg-10\">\n\n            \n              <ul class=\"faq-list\">\n\n                \n                  <li class=\"faq-list__item\">\n                    <button class=\"btn faq-list__btn\"> What oil should I use for my car? <div class=\"faq-list__icon-wrapper\">\n                        <svg class=\"faq-list__icon faq-list__icon--show\" width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n  <path d=\"M12 2C10.0222 2 8.08879 2.58649 6.4443 3.6853C4.79981 4.78412 3.51809 6.3459 2.76121 8.17317C2.00433 10.0004 1.8063 12.0111 2.19215 13.9509C2.578 15.8907 3.53041 17.6725 4.92894 19.0711C6.32746 20.4696 8.10929 21.422 10.0491 21.8079C11.9889 22.1937 13.9996 21.9957 15.8268 21.2388C17.6541 20.4819 19.2159 19.2002 20.3147 17.5557C21.4135 15.9112 22 13.9778 22 12C22 10.6868 21.7413 9.38642 21.2388 8.17317C20.7363 6.95991 19.9997 5.85752 19.0711 4.92893C18.1425 4.00035 17.0401 3.26375 15.8268 2.7612C14.6136 2.25866 13.3132 2 12 2ZM12 20C10.4178 20 8.87104 19.5308 7.55544 18.6518C6.23985 17.7727 5.21447 16.5233 4.60897 15.0615C4.00347 13.5997 3.84504 11.9911 4.15372 10.4393C4.4624 8.88743 5.22433 7.46197 6.34315 6.34315C7.46197 5.22433 8.88743 4.4624 10.4393 4.15372C11.9911 3.84504 13.5997 4.00346 15.0615 4.60896C16.5233 5.21447 17.7727 6.23984 18.6518 7.55544C19.5308 8.87103 20 10.4177 20 12C20 14.1217 19.1572 16.1566 17.6569 17.6569C16.1566 19.1571 14.1217 20 12 20Z\" fill=\"black\"\/>\n  <path d=\"M15 11H13V9C13 8.73478 12.8946 8.48043 12.7071 8.29289C12.5196 8.10536 12.2652 8 12 8C11.7348 8 11.4804 8.10536 11.2929 8.29289C11.1054 8.48043 11 8.73478 11 9V11H9C8.73478 11 8.48043 11.1054 8.29289 11.2929C8.10536 11.4804 8 11.7348 8 12C8 12.2652 8.10536 12.5196 8.29289 12.7071C8.48043 12.8946 8.73478 13 9 13H11V15C11 15.2652 11.1054 15.5196 11.2929 15.7071C11.4804 15.8946 11.7348 16 12 16C12.2652 16 12.5196 15.8946 12.7071 15.7071C12.8946 15.5196 13 15.2652 13 15V13H15C15.2652 13 15.5196 12.8946 15.7071 12.7071C15.8946 12.5196 16 12.2652 16 12C16 11.7348 15.8946 11.4804 15.7071 11.2929C15.5196 11.1054 15.2652 11 15 11Z\" fill=\"black\"\/>\n<\/svg>\n                        <svg class=\"faq-list__icon faq-list__icon--hide\" width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n  <path d=\"M12 2C10.0222 2 8.08879 2.58649 6.4443 3.6853C4.79981 4.78412 3.51809 6.3459 2.76121 8.17317C2.00433 10.0004 1.8063 12.0111 2.19215 13.9509C2.578 15.8907 3.53041 17.6725 4.92894 19.0711C6.32746 20.4696 8.10929 21.422 10.0491 21.8079C11.9889 22.1937 13.9996 21.9957 15.8268 21.2388C17.6541 20.4819 19.2159 19.2002 20.3147 17.5557C21.4135 15.9112 22 13.9778 22 12C22 10.6868 21.7413 9.38642 21.2388 8.17317C20.7363 6.95991 19.9997 5.85752 19.0711 4.92893C18.1425 4.00035 17.0401 3.26375 15.8268 2.7612C14.6136 2.25866 13.3132 2 12 2V2ZM12 20C10.4178 20 8.87104 19.5308 7.55544 18.6518C6.23985 17.7727 5.21447 16.5233 4.60897 15.0615C4.00347 13.5997 3.84504 11.9911 4.15372 10.4393C4.4624 8.88743 5.22433 7.46197 6.34315 6.34315C7.46197 5.22433 8.88743 4.4624 10.4393 4.15372C11.9911 3.84504 13.5997 4.00346 15.0615 4.60896C16.5233 5.21447 17.7727 6.23984 18.6518 7.55544C19.5308 8.87103 20 10.4177 20 12C20 14.1217 19.1572 16.1566 17.6569 17.6569C16.1566 19.1571 14.1217 20 12 20V20Z\" fill=\"black\"\/>\n  <path d=\"M15 11H9C8.73478 11 8.48043 11.1054 8.29289 11.2929C8.10536 11.4804 8 11.7348 8 12C8 12.2652 8.10536 12.5196 8.29289 12.7071C8.48043 12.8946 8.73478 13 9 13H15C15.2652 13 15.5196 12.8946 15.7071 12.7071C15.8946 12.5196 16 12.2652 16 12C16 11.7348 15.8946 11.4804 15.7071 11.2929C15.5196 11.1054 15.2652 11 15 11Z\" fill=\"black\"\/>\n<\/svg>\n                      <\/div>\n                    <\/button>\n                    <div class=\"faq-list__content\">\n                      <p class=\"desc\">Before purchasing a&nbsp;new lubricant, the service book should always be the primary source of information. Car manufacturers offer a&nbsp;degree of flexibility in terms of viscosity, depending on the region and operating conditions of the vehicle. An equally important criterion is that the oil meets specific ACEA\/API standards, especially in modern engines with advanced exhaust aftertreatment systems (DPF, EGR).\r\n<\/p>\n                    <\/div>\n                  <\/li>\n\n                \n                  <li class=\"faq-list__item\">\n                    <button class=\"btn faq-list__btn\"> What oil can I use for top-ups? <div class=\"faq-list__icon-wrapper\">\n                        <svg class=\"faq-list__icon faq-list__icon--show\" width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n  <path d=\"M12 2C10.0222 2 8.08879 2.58649 6.4443 3.6853C4.79981 4.78412 3.51809 6.3459 2.76121 8.17317C2.00433 10.0004 1.8063 12.0111 2.19215 13.9509C2.578 15.8907 3.53041 17.6725 4.92894 19.0711C6.32746 20.4696 8.10929 21.422 10.0491 21.8079C11.9889 22.1937 13.9996 21.9957 15.8268 21.2388C17.6541 20.4819 19.2159 19.2002 20.3147 17.5557C21.4135 15.9112 22 13.9778 22 12C22 10.6868 21.7413 9.38642 21.2388 8.17317C20.7363 6.95991 19.9997 5.85752 19.0711 4.92893C18.1425 4.00035 17.0401 3.26375 15.8268 2.7612C14.6136 2.25866 13.3132 2 12 2ZM12 20C10.4178 20 8.87104 19.5308 7.55544 18.6518C6.23985 17.7727 5.21447 16.5233 4.60897 15.0615C4.00347 13.5997 3.84504 11.9911 4.15372 10.4393C4.4624 8.88743 5.22433 7.46197 6.34315 6.34315C7.46197 5.22433 8.88743 4.4624 10.4393 4.15372C11.9911 3.84504 13.5997 4.00346 15.0615 4.60896C16.5233 5.21447 17.7727 6.23984 18.6518 7.55544C19.5308 8.87103 20 10.4177 20 12C20 14.1217 19.1572 16.1566 17.6569 17.6569C16.1566 19.1571 14.1217 20 12 20Z\" fill=\"black\"\/>\n  <path d=\"M15 11H13V9C13 8.73478 12.8946 8.48043 12.7071 8.29289C12.5196 8.10536 12.2652 8 12 8C11.7348 8 11.4804 8.10536 11.2929 8.29289C11.1054 8.48043 11 8.73478 11 9V11H9C8.73478 11 8.48043 11.1054 8.29289 11.2929C8.10536 11.4804 8 11.7348 8 12C8 12.2652 8.10536 12.5196 8.29289 12.7071C8.48043 12.8946 8.73478 13 9 13H11V15C11 15.2652 11.1054 15.5196 11.2929 15.7071C11.4804 15.8946 11.7348 16 12 16C12.2652 16 12.5196 15.8946 12.7071 15.7071C12.8946 15.5196 13 15.2652 13 15V13H15C15.2652 13 15.5196 12.8946 15.7071 12.7071C15.8946 12.5196 16 12.2652 16 12C16 11.7348 15.8946 11.4804 15.7071 11.2929C15.5196 11.1054 15.2652 11 15 11Z\" fill=\"black\"\/>\n<\/svg>\n                        <svg class=\"faq-list__icon faq-list__icon--hide\" width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n  <path d=\"M12 2C10.0222 2 8.08879 2.58649 6.4443 3.6853C4.79981 4.78412 3.51809 6.3459 2.76121 8.17317C2.00433 10.0004 1.8063 12.0111 2.19215 13.9509C2.578 15.8907 3.53041 17.6725 4.92894 19.0711C6.32746 20.4696 8.10929 21.422 10.0491 21.8079C11.9889 22.1937 13.9996 21.9957 15.8268 21.2388C17.6541 20.4819 19.2159 19.2002 20.3147 17.5557C21.4135 15.9112 22 13.9778 22 12C22 10.6868 21.7413 9.38642 21.2388 8.17317C20.7363 6.95991 19.9997 5.85752 19.0711 4.92893C18.1425 4.00035 17.0401 3.26375 15.8268 2.7612C14.6136 2.25866 13.3132 2 12 2V2ZM12 20C10.4178 20 8.87104 19.5308 7.55544 18.6518C6.23985 17.7727 5.21447 16.5233 4.60897 15.0615C4.00347 13.5997 3.84504 11.9911 4.15372 10.4393C4.4624 8.88743 5.22433 7.46197 6.34315 6.34315C7.46197 5.22433 8.88743 4.4624 10.4393 4.15372C11.9911 3.84504 13.5997 4.00346 15.0615 4.60896C16.5233 5.21447 17.7727 6.23984 18.6518 7.55544C19.5308 8.87103 20 10.4177 20 12C20 14.1217 19.1572 16.1566 17.6569 17.6569C16.1566 19.1571 14.1217 20 12 20V20Z\" fill=\"black\"\/>\n  <path d=\"M15 11H9C8.73478 11 8.48043 11.1054 8.29289 11.2929C8.10536 11.4804 8 11.7348 8 12C8 12.2652 8.10536 12.5196 8.29289 12.7071C8.48043 12.8946 8.73478 13 9 13H15C15.2652 13 15.5196 12.8946 15.7071 12.7071C15.8946 12.5196 16 12.2652 16 12C16 11.7348 15.8946 11.4804 15.7071 11.2929C15.5196 11.1054 15.2652 11 15 11Z\" fill=\"black\"\/>\n<\/svg>\n                      <\/div>\n                    <\/button>\n                    <div class=\"faq-list__content\">\n                      <p class=\"desc\">For top-ups between changes, it is recommended to use the same oil as used. In emergency cases, topping up with another lubricant of the same SAE viscosity grade is possible.<\/p>\n                    <\/div>\n                  <\/li>\n\n                \n                  <li class=\"faq-list__item\">\n                    <button class=\"btn faq-list__btn\"> What are the consequences of using the wrong oil? <div class=\"faq-list__icon-wrapper\">\n                        <svg class=\"faq-list__icon faq-list__icon--show\" width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n  <path d=\"M12 2C10.0222 2 8.08879 2.58649 6.4443 3.6853C4.79981 4.78412 3.51809 6.3459 2.76121 8.17317C2.00433 10.0004 1.8063 12.0111 2.19215 13.9509C2.578 15.8907 3.53041 17.6725 4.92894 19.0711C6.32746 20.4696 8.10929 21.422 10.0491 21.8079C11.9889 22.1937 13.9996 21.9957 15.8268 21.2388C17.6541 20.4819 19.2159 19.2002 20.3147 17.5557C21.4135 15.9112 22 13.9778 22 12C22 10.6868 21.7413 9.38642 21.2388 8.17317C20.7363 6.95991 19.9997 5.85752 19.0711 4.92893C18.1425 4.00035 17.0401 3.26375 15.8268 2.7612C14.6136 2.25866 13.3132 2 12 2ZM12 20C10.4178 20 8.87104 19.5308 7.55544 18.6518C6.23985 17.7727 5.21447 16.5233 4.60897 15.0615C4.00347 13.5997 3.84504 11.9911 4.15372 10.4393C4.4624 8.88743 5.22433 7.46197 6.34315 6.34315C7.46197 5.22433 8.88743 4.4624 10.4393 4.15372C11.9911 3.84504 13.5997 4.00346 15.0615 4.60896C16.5233 5.21447 17.7727 6.23984 18.6518 7.55544C19.5308 8.87103 20 10.4177 20 12C20 14.1217 19.1572 16.1566 17.6569 17.6569C16.1566 19.1571 14.1217 20 12 20Z\" fill=\"black\"\/>\n  <path d=\"M15 11H13V9C13 8.73478 12.8946 8.48043 12.7071 8.29289C12.5196 8.10536 12.2652 8 12 8C11.7348 8 11.4804 8.10536 11.2929 8.29289C11.1054 8.48043 11 8.73478 11 9V11H9C8.73478 11 8.48043 11.1054 8.29289 11.2929C8.10536 11.4804 8 11.7348 8 12C8 12.2652 8.10536 12.5196 8.29289 12.7071C8.48043 12.8946 8.73478 13 9 13H11V15C11 15.2652 11.1054 15.5196 11.2929 15.7071C11.4804 15.8946 11.7348 16 12 16C12.2652 16 12.5196 15.8946 12.7071 15.7071C12.8946 15.5196 13 15.2652 13 15V13H15C15.2652 13 15.5196 12.8946 15.7071 12.7071C15.8946 12.5196 16 12.2652 16 12C16 11.7348 15.8946 11.4804 15.7071 11.2929C15.5196 11.1054 15.2652 11 15 11Z\" fill=\"black\"\/>\n<\/svg>\n                        <svg class=\"faq-list__icon faq-list__icon--hide\" width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n  <path d=\"M12 2C10.0222 2 8.08879 2.58649 6.4443 3.6853C4.79981 4.78412 3.51809 6.3459 2.76121 8.17317C2.00433 10.0004 1.8063 12.0111 2.19215 13.9509C2.578 15.8907 3.53041 17.6725 4.92894 19.0711C6.32746 20.4696 8.10929 21.422 10.0491 21.8079C11.9889 22.1937 13.9996 21.9957 15.8268 21.2388C17.6541 20.4819 19.2159 19.2002 20.3147 17.5557C21.4135 15.9112 22 13.9778 22 12C22 10.6868 21.7413 9.38642 21.2388 8.17317C20.7363 6.95991 19.9997 5.85752 19.0711 4.92893C18.1425 4.00035 17.0401 3.26375 15.8268 2.7612C14.6136 2.25866 13.3132 2 12 2V2ZM12 20C10.4178 20 8.87104 19.5308 7.55544 18.6518C6.23985 17.7727 5.21447 16.5233 4.60897 15.0615C4.00347 13.5997 3.84504 11.9911 4.15372 10.4393C4.4624 8.88743 5.22433 7.46197 6.34315 6.34315C7.46197 5.22433 8.88743 4.4624 10.4393 4.15372C11.9911 3.84504 13.5997 4.00346 15.0615 4.60896C16.5233 5.21447 17.7727 6.23984 18.6518 7.55544C19.5308 8.87103 20 10.4177 20 12C20 14.1217 19.1572 16.1566 17.6569 17.6569C16.1566 19.1571 14.1217 20 12 20V20Z\" fill=\"black\"\/>\n  <path d=\"M15 11H9C8.73478 11 8.48043 11.1054 8.29289 11.2929C8.10536 11.4804 8 11.7348 8 12C8 12.2652 8.10536 12.5196 8.29289 12.7071C8.48043 12.8946 8.73478 13 9 13H15C15.2652 13 15.5196 12.8946 15.7071 12.7071C15.8946 12.5196 16 12.2652 16 12C16 11.7348 15.8946 11.4804 15.7071 11.2929C15.5196 11.1054 15.2652 11 15 11Z\" fill=\"black\"\/>\n<\/svg>\n                      <\/div>\n                    <\/button>\n                    <div class=\"faq-list__content\">\n                      <p class=\"desc\">Using oil with too low a&nbsp;viscosity runs the risk of disrupting the lubricating film, which can lead to chafing of mating parts and contamination of the oil system with the resulting wear particles.\r\n\r\n\r\n A lubricant with a&nbsp;viscosity higher than the recommended viscosity can cause excessive pressure build-up in the system, which often results in seals, such as the crankshaft, being pushed out. High viscosity during cold starts can lead to damage to components furthest from the oil pump, due to the increased time required to build up the correct pressure.\r\nOils incompatible with emission-reducing systems can lead to clogging, significantly shortening the life of engine accessories.<\/p>\n                    <\/div>\n                  <\/li>\n\n                \n              <\/ul>\n\n            \n          <\/div>\n\n        <\/div>\n      <\/div>\n    <\/div>\n    <div class=\"faq__column faq__column--right faq__column--image\" style=\"background-image: url(https:\/\/ecol.eu\/wp-content\/uploads\/2024\/10\/ecol-flota-pobor-oleju.jpg)\">\n    <\/div>\n  <\/div>\n<\/section>\n\n\n<section class=\"contact-persons alignwide\">\n  <div class=\"container\">\n    <div class=\"row\">\n\n      <div class=\"offset-lg-2 offset-md-0 col-lg-8\">\n\n        \n          <h2 class=\"heading heading--line\">contact<\/h2>\n\n        \n        \n          <h3 class=\"heading heading--large\"> Do you have questions about car oil testing?<\/h3>\n\n        \n        \n          <p class=\"desc\"> contact us directly:\r\n<\/p>\n\n        \n      <\/div>\n\n      \n        <ul class=\"offset-lg-2 offset-md-0 col-lg-9 listing\">\n\n          \n            \n            <li class=\"listing__item\">\n\n\t            \n\t\t\t\t\t\t\t\t<div class=\"listing__inner-wrapper\">\n\t\t\t\t\t\t\t\t\t<div class=\"listing__image-wrapper\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/ecol.eu\/wp-content\/uploads\/2024\/06\/katarzyna-paryz-400x400-2.jpg\" class=\"listing__image\" alt=\"\" loading=\"lazy\">\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"listing__inner-details\">\n\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<h3 class=\"listing__heading heading heading--b\">Katarzyna Pary\u017c<\/h3>\n\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<p class=\"listing__position\">Head of sales office<\/p>\n\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"tel:+48666047697\" class=\"listing__link\" target=\"\"><svg width=\"14\" height=\"14\" viewBox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n  <path d=\"M13.1403 9.8875C13.1044 9.85906 10.5 7.98175 9.78512 8.1165C9.44387 8.17688 9.24875 8.40963 8.85719 8.87556C8.79419 8.95081 8.64281 9.13106 8.52513 9.25925C8.27767 9.17854 8.03629 9.08029 7.80281 8.96525C6.59773 8.37857 5.62406 7.4049 5.03737 6.19981C4.92225 5.96637 4.824 5.72498 4.74337 5.4775C4.872 5.35938 5.05225 5.208 5.12925 5.14325C5.593 4.75387 5.82619 4.55875 5.88656 4.21662C6.01038 3.50787 4.13437 0.8855 4.11469 0.861875C4.02957 0.740281 3.91849 0.639127 3.78948 0.565733C3.66047 0.492338 3.51676 0.448537 3.36875 0.4375C2.60837 0.4375 0.4375 3.25369 0.4375 3.72794C0.4375 3.7555 0.477313 6.55725 3.93225 10.0717C7.44319 13.5227 10.2445 13.5625 10.2721 13.5625C10.7467 13.5625 13.5625 11.3916 13.5625 10.6312C13.5516 10.4838 13.508 10.3405 13.435 10.2119C13.362 10.0833 13.2614 9.97248 13.1403 9.8875Z\" fill=\"black\"\/>\n<\/svg>\n666 047 697<\/a>\n\n\t\t\t\t\t\t\t\t\t\t\n                    \n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"mailto:k.paryz@ecol.eu\" class=\"listing__link\" target=\"\"><svg width=\"14\" height=\"14\" viewBox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n  <g clip-path=\"url(#clip0_447_7182)\">\n    <path d=\"M8.17001 8.57754C7.82171 8.80974 7.41713 8.93249 7 8.93249C6.5829 8.93249 6.17832 8.80974 5.83002 8.57754L0.0932148 4.75289C0.0613867 4.73167 0.0303789 4.70955 0 4.6868V10.9539C0 11.6724 0.583105 12.2427 1.28879 12.2427H12.7112C13.4297 12.2427 14 11.6596 14 10.9539V4.68677C13.9695 4.70957 13.9385 4.73175 13.9066 4.75299L8.17001 8.57754Z\" fill=\"black\"\/>\n    <path d=\"M0.548242 4.07039L6.28504 7.89507C6.50221 8.03985 6.75109 8.11223 6.99997 8.11223C7.24888 8.11223 7.49779 8.03982 7.71496 7.89507L13.4518 4.07039C13.7951 3.84166 14 3.45884 14 3.04568C14 2.33526 13.422 1.75732 12.7116 1.75732H1.28836C0.577965 1.75735 0 2.33529 0 3.04636C0 3.45884 0.204969 3.84166 0.548242 4.07039Z\" fill=\"black\"\/>\n  <\/g>\n  <defs>\n    <clipPath id=\"clip0_447_7182\">\n      <rect width=\"14\" height=\"14\" fill=\"white\"\/>\n    <\/clipPath>\n  <\/defs>\n<\/svg>\nk.paryz@ecol.eu<\/a>\n\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t\n            <\/li>\n\n          \n            \n            <li class=\"listing__item\">\n\n\t            \n\t\t\t\t\t\t\t\t<div class=\"listing__inner-wrapper\">\n\t\t\t\t\t\t\t\t\t<div class=\"listing__image-wrapper\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/ecol.eu\/wp-content\/uploads\/2024\/06\/logo-contact-persons.png\" class=\"listing__image\" alt=\"\" loading=\"lazy\">\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"listing__inner-details\">\n\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<h3 class=\"listing__heading heading heading--b\">Laboratory team<\/h3>\n\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"tel:+48324503111\" class=\"listing__link\" target=\"\"><svg width=\"14\" height=\"14\" viewBox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n  <path d=\"M13.1403 9.8875C13.1044 9.85906 10.5 7.98175 9.78512 8.1165C9.44387 8.17688 9.24875 8.40963 8.85719 8.87556C8.79419 8.95081 8.64281 9.13106 8.52513 9.25925C8.27767 9.17854 8.03629 9.08029 7.80281 8.96525C6.59773 8.37857 5.62406 7.4049 5.03737 6.19981C4.92225 5.96637 4.824 5.72498 4.74337 5.4775C4.872 5.35938 5.05225 5.208 5.12925 5.14325C5.593 4.75387 5.82619 4.55875 5.88656 4.21662C6.01038 3.50787 4.13437 0.8855 4.11469 0.861875C4.02957 0.740281 3.91849 0.639127 3.78948 0.565733C3.66047 0.492338 3.51676 0.448537 3.36875 0.4375C2.60837 0.4375 0.4375 3.25369 0.4375 3.72794C0.4375 3.7555 0.477313 6.55725 3.93225 10.0717C7.44319 13.5227 10.2445 13.5625 10.2721 13.5625C10.7467 13.5625 13.5625 11.3916 13.5625 10.6312C13.5516 10.4838 13.508 10.3405 13.435 10.2119C13.362 10.0833 13.2614 9.97248 13.1403 9.8875Z\" fill=\"black\"\/>\n<\/svg>\n32 450 31 11<\/a>\n\n\t\t\t\t\t\t\t\t\t\t\n                    \n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"mailto:laboratorium@ecol.eu\" class=\"listing__link\" target=\"\"><svg width=\"14\" height=\"14\" viewBox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n  <g clip-path=\"url(#clip0_447_7182)\">\n    <path d=\"M8.17001 8.57754C7.82171 8.80974 7.41713 8.93249 7 8.93249C6.5829 8.93249 6.17832 8.80974 5.83002 8.57754L0.0932148 4.75289C0.0613867 4.73167 0.0303789 4.70955 0 4.6868V10.9539C0 11.6724 0.583105 12.2427 1.28879 12.2427H12.7112C13.4297 12.2427 14 11.6596 14 10.9539V4.68677C13.9695 4.70957 13.9385 4.73175 13.9066 4.75299L8.17001 8.57754Z\" fill=\"black\"\/>\n    <path d=\"M0.548242 4.07039L6.28504 7.89507C6.50221 8.03985 6.75109 8.11223 6.99997 8.11223C7.24888 8.11223 7.49779 8.03982 7.71496 7.89507L13.4518 4.07039C13.7951 3.84166 14 3.45884 14 3.04568C14 2.33526 13.422 1.75732 12.7116 1.75732H1.28836C0.577965 1.75735 0 2.33529 0 3.04636C0 3.45884 0.204969 3.84166 0.548242 4.07039Z\" fill=\"black\"\/>\n  <\/g>\n  <defs>\n    <clipPath id=\"clip0_447_7182\">\n      <rect width=\"14\" height=\"14\" fill=\"white\"\/>\n    <\/clipPath>\n  <\/defs>\n<\/svg>\nlaboratorium@ecol.eu<\/a>\n\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t\n            <\/li>\n\n          \n            \n            <li class=\"listing__item\">\n\n\t            \n\t\t\t\t\t\t\t\t<div class=\"listing__inner-wrapper\">\n\t\t\t\t\t\t\t\t\t<div class=\"listing__image-wrapper\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/ecol.eu\/wp-content\/uploads\/2024\/06\/logo-contact-persons.png\" class=\"listing__image\" alt=\"\" loading=\"lazy\">\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"listing__inner-details\">\n\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<h3 class=\"listing__heading heading heading--b\">Diagnostic team<\/h3>\n\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"tel:+48324503152\" class=\"listing__link\" target=\"\"><svg width=\"14\" height=\"14\" viewBox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n  <path d=\"M13.1403 9.8875C13.1044 9.85906 10.5 7.98175 9.78512 8.1165C9.44387 8.17688 9.24875 8.40963 8.85719 8.87556C8.79419 8.95081 8.64281 9.13106 8.52513 9.25925C8.27767 9.17854 8.03629 9.08029 7.80281 8.96525C6.59773 8.37857 5.62406 7.4049 5.03737 6.19981C4.92225 5.96637 4.824 5.72498 4.74337 5.4775C4.872 5.35938 5.05225 5.208 5.12925 5.14325C5.593 4.75387 5.82619 4.55875 5.88656 4.21662C6.01038 3.50787 4.13437 0.8855 4.11469 0.861875C4.02957 0.740281 3.91849 0.639127 3.78948 0.565733C3.66047 0.492338 3.51676 0.448537 3.36875 0.4375C2.60837 0.4375 0.4375 3.25369 0.4375 3.72794C0.4375 3.7555 0.477313 6.55725 3.93225 10.0717C7.44319 13.5227 10.2445 13.5625 10.2721 13.5625C10.7467 13.5625 13.5625 11.3916 13.5625 10.6312C13.5516 10.4838 13.508 10.3405 13.435 10.2119C13.362 10.0833 13.2614 9.97248 13.1403 9.8875Z\" fill=\"black\"\/>\n<\/svg>\n32 450 31 52<\/a>\n\n\t\t\t\t\t\t\t\t\t\t\n                    \n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"mailto:laboratorium@ecol.eu\" class=\"listing__link\" target=\"\"><svg width=\"14\" height=\"14\" viewBox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n  <g clip-path=\"url(#clip0_447_7182)\">\n    <path d=\"M8.17001 8.57754C7.82171 8.80974 7.41713 8.93249 7 8.93249C6.5829 8.93249 6.17832 8.80974 5.83002 8.57754L0.0932148 4.75289C0.0613867 4.73167 0.0303789 4.70955 0 4.6868V10.9539C0 11.6724 0.583105 12.2427 1.28879 12.2427H12.7112C13.4297 12.2427 14 11.6596 14 10.9539V4.68677C13.9695 4.70957 13.9385 4.73175 13.9066 4.75299L8.17001 8.57754Z\" fill=\"black\"\/>\n    <path d=\"M0.548242 4.07039L6.28504 7.89507C6.50221 8.03985 6.75109 8.11223 6.99997 8.11223C7.24888 8.11223 7.49779 8.03982 7.71496 7.89507L13.4518 4.07039C13.7951 3.84166 14 3.45884 14 3.04568C14 2.33526 13.422 1.75732 12.7116 1.75732H1.28836C0.577965 1.75735 0 2.33529 0 3.04636C0 3.45884 0.204969 3.84166 0.548242 4.07039Z\" fill=\"black\"\/>\n  <\/g>\n  <defs>\n    <clipPath id=\"clip0_447_7182\">\n      <rect width=\"14\" height=\"14\" fill=\"white\"\/>\n    <\/clipPath>\n  <\/defs>\n<\/svg>\nlaboratorium@ecol.eu<\/a>\n\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t\n            <\/li>\n\n          \n        <\/ul>\n\n      \n    <\/div>\n  <\/div>\n<\/section>\n\n\n<section class=\"news alignwide\">\n  <div class=\"container\">\n    <div class=\"row justify-content-center\">\n      <div class=\"offset-lg-2 col-lg-10\">\n\n        \n          <h2 class=\"heading heading--line\"> check also<\/h2>\n\n        \n      <\/div>\n\n      \n        <ul class=\"col-lg-10 news-list\">\n\n          \n            \n            <li class=\"news-list__item\">\n              <a href=\"https:\/\/ecol.eu\/en\/knowledge-base\/project-fleet-testing-of-engine-oil-in-ecol-vehicles\" class=\"news-list__inner news-list__inner--wide\">\n                <div class=\"news-list__image-wrapper\">\n                  <img decoding=\"async\" src=\"https:\/\/ecol.eu\/wp-content\/uploads\/2024\/07\/ecol-flota.png\" class=\"news-list__image\" alt=\"ecol-flota\" loading=\"lazy\">\n                <\/div>\n                <div class=\"news-list__details\">\n                  <h3 class=\"heading heading--b\">&#8220;Fleet Project&#8221;: testing of engine oil in Ecol vehicles<\/h3>\n                  <p class=\"desc\">The aim of the project is to investigate the degradation process of engine&#8230;<\/p>\n                  <svg width=\"20\" height=\"20\" viewBox=\"0 0 20 20\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n  <path d=\"M4.16659 10.8333H14.0499L11.0249 14.4666C10.9549 14.5509 10.9021 14.6481 10.8697 14.7528C10.8372 14.8574 10.8257 14.9675 10.8357 15.0766C10.8561 15.2969 10.9631 15.5002 11.1333 15.6416C11.3034 15.7831 11.5228 15.8511 11.7432 15.8308C11.9635 15.8105 12.1668 15.7035 12.3083 15.5333L16.4749 10.5333C16.503 10.4935 16.528 10.4517 16.5499 10.4083C16.5499 10.3666 16.5916 10.3416 16.6083 10.3C16.646 10.2044 16.6658 10.1027 16.6666 9.99996C16.6658 9.89722 16.646 9.79551 16.6083 9.69996C16.6083 9.6583 16.5666 9.6333 16.5499 9.59163C16.528 9.54818 16.503 9.5064 16.4749 9.46663L12.3083 4.46663C12.2299 4.37256 12.1318 4.29691 12.0209 4.24506C11.91 4.19321 11.789 4.16643 11.6666 4.16663C11.4719 4.16625 11.2832 4.23406 11.1333 4.35829C11.0489 4.42825 10.9791 4.51417 10.928 4.61112C10.8769 4.70808 10.8454 4.81417 10.8353 4.92332C10.8252 5.03247 10.8368 5.14253 10.8693 5.2472C10.9019 5.35187 10.9547 5.44909 11.0249 5.53329L14.0499 9.16663H4.16659C3.94557 9.16663 3.73361 9.25443 3.57733 9.41071C3.42105 9.56699 3.33325 9.77895 3.33325 9.99996C3.33325 10.221 3.42105 10.4329 3.57733 10.5892C3.73361 10.7455 3.94557 10.8333 4.16659 10.8333Z\" fill=\"black\"\/>\n<\/svg>\n                <\/div>\n              <\/a>\n            <\/li>\n\n          \n            \n            <li class=\"news-list__item\">\n              <a href=\"https:\/\/ecol.eu\/en\/knowledge-base\/fleet-project-part-1-analysis-of-wear-elements\" class=\"news-list__inner \">\n                <div class=\"news-list__image-wrapper\">\n                  <img decoding=\"async\" src=\"https:\/\/ecol.eu\/wp-content\/uploads\/2024\/10\/projekt-flota-wyk1.png\" class=\"news-list__image\" alt=\"projekt flota-wyk1\" loading=\"lazy\">\n                <\/div>\n                <div class=\"news-list__details\">\n                  <h3 class=\"heading heading--b\">&#8220;Fleet Project&#8221;: part 1 &#8211; analysis of wear elements<\/h3>\n                  <p class=\"desc\">The first part of the conclusions of the research project \u2018Project Fleet\u2019, carried&#8230;<\/p>\n                  <svg width=\"20\" height=\"20\" viewBox=\"0 0 20 20\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n  <path d=\"M4.16659 10.8333H14.0499L11.0249 14.4666C10.9549 14.5509 10.9021 14.6481 10.8697 14.7528C10.8372 14.8574 10.8257 14.9675 10.8357 15.0766C10.8561 15.2969 10.9631 15.5002 11.1333 15.6416C11.3034 15.7831 11.5228 15.8511 11.7432 15.8308C11.9635 15.8105 12.1668 15.7035 12.3083 15.5333L16.4749 10.5333C16.503 10.4935 16.528 10.4517 16.5499 10.4083C16.5499 10.3666 16.5916 10.3416 16.6083 10.3C16.646 10.2044 16.6658 10.1027 16.6666 9.99996C16.6658 9.89722 16.646 9.79551 16.6083 9.69996C16.6083 9.6583 16.5666 9.6333 16.5499 9.59163C16.528 9.54818 16.503 9.5064 16.4749 9.46663L12.3083 4.46663C12.2299 4.37256 12.1318 4.29691 12.0209 4.24506C11.91 4.19321 11.789 4.16643 11.6666 4.16663C11.4719 4.16625 11.2832 4.23406 11.1333 4.35829C11.0489 4.42825 10.9791 4.51417 10.928 4.61112C10.8769 4.70808 10.8454 4.81417 10.8353 4.92332C10.8252 5.03247 10.8368 5.14253 10.8693 5.2472C10.9019 5.35187 10.9547 5.44909 11.0249 5.53329L14.0499 9.16663H4.16659C3.94557 9.16663 3.73361 9.25443 3.57733 9.41071C3.42105 9.56699 3.33325 9.77895 3.33325 9.99996C3.33325 10.221 3.42105 10.4329 3.57733 10.5892C3.73361 10.7455 3.94557 10.8333 4.16659 10.8333Z\" fill=\"black\"\/>\n<\/svg>\n                <\/div>\n              <\/a>\n            <\/li>\n\n          \n            \n            <li class=\"news-list__item\">\n              <a href=\"https:\/\/ecol.eu\/en\/knowledge-base\/fleet-project-part-2-safe-oil-change-interval\" class=\"news-list__inner \">\n                <div class=\"news-list__image-wrapper\">\n                  <img decoding=\"async\" src=\"https:\/\/ecol.eu\/wp-content\/uploads\/2024\/11\/Obraz3-1.png\" class=\"news-list__image\" alt=\"Obraz3\" loading=\"lazy\">\n                <\/div>\n                <div class=\"news-list__details\">\n                  <h3 class=\"heading heading--b\">&#8220;Fleet Project&#8221;: part 2 &#8211; safe oil change interval<\/h3>\n                  <p class=\"desc\">What is a safe oil change interval? Let\u2019s answer the question.<\/p>\n                  <svg width=\"20\" height=\"20\" viewBox=\"0 0 20 20\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n  <path d=\"M4.16659 10.8333H14.0499L11.0249 14.4666C10.9549 14.5509 10.9021 14.6481 10.8697 14.7528C10.8372 14.8574 10.8257 14.9675 10.8357 15.0766C10.8561 15.2969 10.9631 15.5002 11.1333 15.6416C11.3034 15.7831 11.5228 15.8511 11.7432 15.8308C11.9635 15.8105 12.1668 15.7035 12.3083 15.5333L16.4749 10.5333C16.503 10.4935 16.528 10.4517 16.5499 10.4083C16.5499 10.3666 16.5916 10.3416 16.6083 10.3C16.646 10.2044 16.6658 10.1027 16.6666 9.99996C16.6658 9.89722 16.646 9.79551 16.6083 9.69996C16.6083 9.6583 16.5666 9.6333 16.5499 9.59163C16.528 9.54818 16.503 9.5064 16.4749 9.46663L12.3083 4.46663C12.2299 4.37256 12.1318 4.29691 12.0209 4.24506C11.91 4.19321 11.789 4.16643 11.6666 4.16663C11.4719 4.16625 11.2832 4.23406 11.1333 4.35829C11.0489 4.42825 10.9791 4.51417 10.928 4.61112C10.8769 4.70808 10.8454 4.81417 10.8353 4.92332C10.8252 5.03247 10.8368 5.14253 10.8693 5.2472C10.9019 5.35187 10.9547 5.44909 11.0249 5.53329L14.0499 9.16663H4.16659C3.94557 9.16663 3.73361 9.25443 3.57733 9.41071C3.42105 9.56699 3.33325 9.77895 3.33325 9.99996C3.33325 10.221 3.42105 10.4329 3.57733 10.5892C3.73361 10.7455 3.94557 10.8333 4.16659 10.8333Z\" fill=\"black\"\/>\n<\/svg>\n                <\/div>\n              <\/a>\n            <\/li>\n\n          \n        <\/ul>\n\n      \n      \n    <\/div>\n  <\/div>\n<\/section>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"Current quality and viscosity grades of engine oils, together with their practical application in spark-ignition and compression-ignition units.\n","protected":false},"author":3,"featured_media":30619,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[61],"tags":[],"class_list":["post-36776","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-diagnostic-services"],"acf":[],"image":"https:\/\/ecol.eu\/wp-content\/uploads\/2024\/10\/ecol-flota-pobor-oleju.jpg","_links":{"self":[{"href":"https:\/\/ecol.eu\/en\/wp-json\/wp\/v2\/posts\/36776","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ecol.eu\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ecol.eu\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ecol.eu\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/ecol.eu\/en\/wp-json\/wp\/v2\/comments?post=36776"}],"version-history":[{"count":6,"href":"https:\/\/ecol.eu\/en\/wp-json\/wp\/v2\/posts\/36776\/revisions"}],"predecessor-version":[{"id":37793,"href":"https:\/\/ecol.eu\/en\/wp-json\/wp\/v2\/posts\/36776\/revisions\/37793"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ecol.eu\/en\/wp-json\/wp\/v2\/media\/30619"}],"wp:attachment":[{"href":"https:\/\/ecol.eu\/en\/wp-json\/wp\/v2\/media?parent=36776"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ecol.eu\/en\/wp-json\/wp\/v2\/categories?post=36776"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ecol.eu\/en\/wp-json\/wp\/v2\/tags?post=36776"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}