{"id":104990,"date":"2023-11-24T11:46:27","date_gmt":"2023-11-24T11:46:27","guid":{"rendered":"https:\/\/www.dubizzle.com\/blog\/cars\/?p=104990"},"modified":"2023-11-24T11:46:30","modified_gmt":"2023-11-24T11:46:30","slug":"engine-oil-numbers","status":"publish","type":"post","link":"https:\/\/www.dubizzle.com\/blog\/cars\/engine-oil-numbers\/","title":{"rendered":"Decoding Engine Oil Numbers"},"content":{"rendered":"\n<ul class=\"wp-block-list\"><li><a href=\"#h-engine-oil-numbering-based-on-viscosity\">Engine Oil Numbering Based on Viscosity<\/a><\/li><li><a href=\"#h-api-service-classification-of-engine-oils\">API Service Classification of Engine Oils<\/a><\/li><li><a href=\"#h-acea-specifications-for-engine-oils\">ACEA Specifications<\/a><\/li><li><a href=\"#h-faqs\">FAQs<\/a><\/li><\/ul>\n\n\n\n<p>The engine oil serves as a vital fluid for your car\u2019s engine, ensuring its smooth operation and longevity. When you stroll down the automotive aisle of a store, you&#8217;re likely to be confronted with a myriad of engine oil options, each labelled with a combination of numbers and letters. Understanding these engine oil numbers is essential for selecting the right oil for your vehicle.&nbsp;<\/p>\n\n\n\n<p>Let\u2019s explore what the numbers on engine oil bottles mean, understand their implications for the oil&#8217;s properties and how they can guide you in making informed choices.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"640\" src=\"https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081351\/Number-on-Engine-Oil-Bottles-_-Body-2-23-11-23-1024x640.jpg\" alt=\"oil with spcecific engine oil number being filled in car\" class=\"wp-image-105106\" srcset=\"https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081351\/Number-on-Engine-Oil-Bottles-_-Body-2-23-11-23-1024x640.jpg 1024w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081351\/Number-on-Engine-Oil-Bottles-_-Body-2-23-11-23-300x188.jpg 300w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081351\/Number-on-Engine-Oil-Bottles-_-Body-2-23-11-23-768x480.jpg 768w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081351\/Number-on-Engine-Oil-Bottles-_-Body-2-23-11-23-640x400.jpg 640w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081351\/Number-on-Engine-Oil-Bottles-_-Body-2-23-11-23-421x263.jpg 421w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081351\/Number-on-Engine-Oil-Bottles-_-Body-2-23-11-23-558x349.jpg 558w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081351\/Number-on-Engine-Oil-Bottles-_-Body-2-23-11-23-363x227.jpg 363w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081351\/Number-on-Engine-Oil-Bottles-_-Body-2-23-11-23-250x156.jpg 250w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081351\/Number-on-Engine-Oil-Bottles-_-Body-2-23-11-23-368x230.jpg 368w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081351\/Number-on-Engine-Oil-Bottles-_-Body-2-23-11-23-774x484.jpg 774w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081351\/Number-on-Engine-Oil-Bottles-_-Body-2-23-11-23-672x420.jpg 672w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081351\/Number-on-Engine-Oil-Bottles-_-Body-2-23-11-23-437x273.jpg 437w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081351\/Number-on-Engine-Oil-Bottles-_-Body-2-23-11-23-301x188.jpg 301w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081351\/Number-on-Engine-Oil-Bottles-_-Body-2-23-11-23-240x150.jpg 240w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081351\/Number-on-Engine-Oil-Bottles-_-Body-2-23-11-23-771x482.jpg 771w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081351\/Number-on-Engine-Oil-Bottles-_-Body-2-23-11-23-669x418.jpg 669w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081351\/Number-on-Engine-Oil-Bottles-_-Body-2-23-11-23-435x272.jpg 435w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>The engine oil bottle numbers are alpha-numeric codes which indicate an oil&#8217;s functionality and nature<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-do-the-engine-oil-numbers-mean\">What Do the Engine Oil Numbers Mean?<\/h2>\n\n\n\n<p>The alpha-numeric code on the <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/car-engine-oil-working\/\" target=\"_blank\" rel=\"noreferrer noopener\">car engine oil<\/a> bottles indicates the oil&#8217;s nature and function. Here, we&#8217;ve outlined the criteria for characterising and differentiating engine oils.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-engine-oil-numbering-based-on-viscosity\">Engine Oil Numbering Based on Viscosity<\/h3>\n\n\n\n<p>The most prominent numbers on an engine oil bottle refer to its viscosity, a measure of the oil&#8217;s resistance to flow. Multi-viscosity motor oils feature a set of two engine oil numbers. The initial set (0, 5, 10, 15 and 25) reflects the oil&#8217;s low-temperature flow, with a smaller number indicating better flow, followed by the \u2018W\u2019, denoting the winter grade.&nbsp;<\/p>\n\n\n\n<p>The second set indicates high\/operating temperature flow; for instance, 10W-30 oil flows better than 10W-40 at normal operating temperature.<\/p>\n\n\n\n<p>If the grade lacks \u2018SAE\u2019 or the \u2018W-\u2019 between the numbers, it might not be a multi-grade. For instance, a 5-30 is not a multi-grade oil.<\/p>\n\n\n\n<p>Let\u2019s explore some globally used engine oil grades:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>0W-20:<\/strong> Starts with a thinner viscosity (0) when cold, transitioning to thicker viscosity at normal operating temperature.<\/li><li><strong>0W-30: <\/strong>Behaves as a 0-weight oil at the start and increases in viscosity at normal operating temperature.<\/li><li><strong>0W-40: <\/strong>Acts as a 0-weight oil initially and transitions to a heavier, 40-weight oil at normal operating temperature.<\/li><li><strong>5W-30:<\/strong> This oil is suitable for colder climates, as the &#8216;5W&#8217; indicates its flow characteristics in winter. The &#8217;30&#8217; signifies its viscosity at higher temperatures, making it versatile for a vast range of driving conditions.<\/li><li><strong>5W-40:<\/strong> Fully synthetic, performing like a 5-weight oil during cold starts and a 40-weight oil at normal temperature.<\/li><li><strong>10W-40:<\/strong> It has a slightly higher viscosity at both low and high temperatures compared to the 5W-30. This makes it a better choice for warmer climates or older engines that demand a thicker lubricant.<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-api-service-classification-of-engine-oils\">API Service Classification of Engine Oils<\/h3>\n\n\n\n<p>The American Petroleum Institute (API) classifies engine oil numbers based on the type of engine, with \u2018S\u2019 for petrol and \u2018C\u2019 for diesel. The letter following denotes the oil&#8217;s standard, with higher alphabet letters indicating newer and better standards, for example, SN &gt; SL.&nbsp;<\/p>\n\n\n\n<p>Diesel engine oils may have sub-standards like CF-2 and CH-4. Choosing oil with a higher standard than the engine&#8217;s requirement is acceptable, however, it must be noted that when opting for higher standard oil, only the neighbouring one should be used, for instance, SM instead of SL. That said, using lower-standard oil can lead to accelerated wear which is also a <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/using-wrong-car-oil\/\" target=\"_blank\" rel=\"noreferrer noopener\">sign of wrong car oil usage<\/a>.<\/p>\n\n\n\n<p>Petrol engine oil grades include:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>SG<\/strong> &#8211; Introduced earlier than 1993<\/li><li><strong>SH<\/strong> &#8211; Introduced in 1993<\/li><li><strong>SJ<\/strong> &#8211; Introduced in 1996<\/li><li><strong>SL<\/strong> &#8211; Introduced in 2001<\/li><li><strong>SM<\/strong> &#8211; Introduced in 2004<\/li><li><strong>SN<\/strong> &#8211; Introduced in 2010<\/li><\/ul>\n\n\n\n<p>Similarly, each diesel engine oil grade meets specific emission and performance criteria. Some examples of these are:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>CC<\/strong> &#8211; for light engines<\/li><li><strong>CD<\/strong> &#8211; for four-stroke engines<\/li><li><strong>CD-I<\/strong>I &#8211; for two-stroke engines<\/li><li><strong>CE<\/strong> &#8211; for those low engines working under heavy load<\/li><li><strong>CF<\/strong> &#8211; a better standard than CD diesel oil<\/li><li><strong>CF-4<\/strong> &#8211; a better standard than CE standard diesel oil&nbsp;<\/li><li><strong>CF-2<\/strong> &#8211; a better standard than CD-II diesel oil<\/li><li><strong>CG-4<\/strong> &#8211; a better standard than CD, for low emissions&nbsp;<\/li><li><strong>CH-4<\/strong> &#8211; replacement standard for CD&nbsp;<\/li><li><strong>CI-4<\/strong> &#8211; Introduced in 2002, a replacement for CD, CE CF, CG and CH standards<\/li><li><strong>CJ-4<\/strong> &#8211; better for engines with enhanced exhaust cleaning<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"640\" src=\"https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081611\/Number-on-Engine-Oil-Bottles-_-Body-1-23-11-23-1024x640.jpg\" alt=\"choosing between engine oils based on their codes\" class=\"wp-image-105108\" srcset=\"https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081611\/Number-on-Engine-Oil-Bottles-_-Body-1-23-11-23-1024x640.jpg 1024w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081611\/Number-on-Engine-Oil-Bottles-_-Body-1-23-11-23-300x188.jpg 300w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081611\/Number-on-Engine-Oil-Bottles-_-Body-1-23-11-23-768x480.jpg 768w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081611\/Number-on-Engine-Oil-Bottles-_-Body-1-23-11-23-640x400.jpg 640w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081611\/Number-on-Engine-Oil-Bottles-_-Body-1-23-11-23-421x263.jpg 421w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081611\/Number-on-Engine-Oil-Bottles-_-Body-1-23-11-23-558x349.jpg 558w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081611\/Number-on-Engine-Oil-Bottles-_-Body-1-23-11-23-363x227.jpg 363w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081611\/Number-on-Engine-Oil-Bottles-_-Body-1-23-11-23-250x156.jpg 250w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081611\/Number-on-Engine-Oil-Bottles-_-Body-1-23-11-23-368x230.jpg 368w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081611\/Number-on-Engine-Oil-Bottles-_-Body-1-23-11-23-774x484.jpg 774w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081611\/Number-on-Engine-Oil-Bottles-_-Body-1-23-11-23-672x420.jpg 672w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081611\/Number-on-Engine-Oil-Bottles-_-Body-1-23-11-23-437x273.jpg 437w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081611\/Number-on-Engine-Oil-Bottles-_-Body-1-23-11-23-301x188.jpg 301w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081611\/Number-on-Engine-Oil-Bottles-_-Body-1-23-11-23-240x150.jpg 240w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081611\/Number-on-Engine-Oil-Bottles-_-Body-1-23-11-23-771x482.jpg 771w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081611\/Number-on-Engine-Oil-Bottles-_-Body-1-23-11-23-669x418.jpg 669w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/23081611\/Number-on-Engine-Oil-Bottles-_-Body-1-23-11-23-435x272.jpg 435w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Understanding the engine oil numbers is important to make well-informed decisions for your car<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-acea-specifications-for-engine-oils\">ACEA Specifications for Engine Oils<\/h3>\n\n\n\n<p>ACEA (European Association of Automotive Manufacturers) has its classification, categorising oils into:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>A\/B<\/strong> &#8211; for petrol and diesel engines in light commercial cars<\/li><li><strong>C<\/strong> &#8211; indicates low SAPS (Sulphated Ash, Phosphorus and Sulfur) or low ash. These oils are essential for vehicles with particulate filters and advanced catalytic systems. They extend the lifespan by minimising ash deposits on the filters or catalysts, preventing clogging.<\/li><li><strong>E<\/strong> &#8211; oil grade for trucks with diesel engines.<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-faqs\">FAQs<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-which-one-is-better-5w-30-or-5w-40\">Which one is better, 5W-30 or 5W-40?<\/h3>\n\n\n\n<p>Opting between the engine oil numbers &#8211; 5W-30 or 5W-40 depends on multiple factors, including your car\u2019s model year, engine and driving habits. That said, for urban driving, frequent traffic, high speeds and older cars, opt for 5W-40. On the other hand, if you prioritise calm driving, fuel economy and eco-friendliness, go for 5W-30.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-what-is-the-difference-between-0w-30-vs-5w-30-oil-grades\">What is the difference between 0W-30 vs 5W-30 oil grades?<\/h3>\n\n\n\n<p>The primary <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/0w30-vs-5w30-engine-oil\/\" target=\"_blank\" rel=\"noreferrer noopener\">difference between 0W-30 vs 5W-30 oils<\/a> lies in cold-start viscosity. 0W-30 is thinner at startup and beneficial in extremely cold temperatures. Whereas, 5W-30 is slightly thicker initially but still provides good cold-weather performance. Both transition to similar viscosity at operating temperature. Moreover, here is another comparison of <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/racing-vs-regular-oil\/\" target=\"_blank\" rel=\"noreferrer noopener\">racing vs regular oil<\/a> to help you differentiate between the oil&#8217;s requirements for racing and street cars.  <\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-what-are-the-different-types-of-car-engine-oil\">What are the different types of car engine oil?<\/h3>\n\n\n\n<p>There are primarily four <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/car-engine-oil-types\/\" target=\"_blank\" rel=\"noreferrer noopener\">types of car engine oils<\/a>, varying in viscosity and quality levels. They include:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Mineral oil<\/li><li>Synthetic oil<\/li><li>Semi-synthetic oil<\/li><li>High-performance oil<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-what-does-the-total-base-number-tbn-in-oils-mean\">What does the Total Base Number (TBN) in oils mean?<\/h3>\n\n\n\n<p>Total Base Number (TBN) in oils represents their alkaline reserve for neutralising acidic elements. It indicates the oil&#8217;s capacity to counteract acids formed during combustion, preventing corrosion and ensuring prolonged engine protection.&nbsp;<\/p>\n\n\n\n<p>The Total Base Number (TBN) lies between 7 to 10 for petrol engines and 10 to 14 for diesel engines. When the TBN decreases, reaching around 3, it can no longer neutralise acids, indicating the need for an oil change.<\/p>\n\n\n\n<p>With this, we have the engine oil numbers explained along with their classification. The numbers on engine oil bottles empower consumers to make informed decisions tailored to their vehicles and driving conditions. Whether you&#8217;re facing sub-zero temperatures or scorching summers, selecting the right viscosity and type of oil is crucial for maintaining optimal engine health.&nbsp;Moreover, here are some <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/myths-engine-oil\/\" target=\"_blank\" rel=\"noreferrer noopener\">engine oil myths<\/a> for you to acknowledge, that are no longer true.<\/p>\n\n\n\n<p>Besides, if you are looking for other car tools, here is a wide range of <a href=\"https:\/\/uae.dubizzle.com\/motors\/auto-accessories-parts\/\" target=\"_blank\" rel=\"noreferrer noopener\">car parts and accessories for sale in the UAE<\/a>.<\/p>\n\n\n\n<p>For more information on different car fluids, stay connected to the <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/\" target=\"_blank\" rel=\"noreferrer noopener\">dubizzle auto blog<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Discover what engine oil numbers means and empower yourself in choosing the right car oil.<\/p>\n","protected":false},"author":32,"featured_media":105107,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"dubizzle-taxonomy-car-year":[],"dubizzle-taxonomy-body-type":[],"dubizzle-taxonomy-car-doors":[],"dubizzle-taxonomy-car-cylinders":[],"dubizzle-taxonomy-car-extras":[],"dubizzle-taxonomy-car-color":[],"dubizzle-taxonomy-car-fuel-type":[],"class_list":{"0":"post-104990","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-parts-repairs"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.0 (Yoast SEO v26.0) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>All About Engine Oil Numbers: Grades, Function &amp; More | dubizzle<\/title>\n<meta name=\"description\" content=\"Unlock the secrets behind the engine oil numbers to make informed choices for your vehicle&#039;s well-being. 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