{"organism":"Page","children":[{"organism":"Container.Raw","children":[{"organism":"Metadata","model":{"title":"Synthetic Diesel Oil - 5 Common Myths","text":"Curious about Synthetic Oil? Find out more as we debunk the 5 most common myths about synthetic diesel engine oil.","links":[{"name":"Synthetic Diesel Oil - 5 Common Myths","value":"https://rotella.shell.com/en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil.html"}]},"id":"/content/shell/business/rotella/en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil/jcr_content/root/metadata"},{"organism":"ContentOwner","model":{},"id":"/content/shell/business/rotella/en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil/jcr_content/root/contentowner"},{"organism":"Container.Header","children":[{"organism":"Container.Raw","ref":"https://rotella.shell.com/en_us/_jcr_content/root/header/inherited.model.json","id":"/content/shell/business/rotella/en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil/jcr_content/root/header/inherited","model":{}},{"organism":"Breadcrumb","model":{"links":[{"name":"Inside Shell Rotella®","value":"https://rotella.shell.com/"},{"name":"Info Hub","value":"https://rotella.shell.com/en_us/info-hub.html"},{"name":"Which Diesel Oil? Here's A Guide","value":"https://rotella.shell.com/en_us/info-hub/diesel-oil-guide.html"},{"name":"Debunked: 5 Common Myths About Synthetic Diesel Oil","value":"https://rotella.shell.com/en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil.html"}]},"id":"/content/shell/business/rotella/en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil/jcr_content/root/header/breadcrumb"}],"id":"/content/shell/business/rotella/en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil/jcr_content/root/header","model":{}},{"organism":"Container.Main","children":[{"organism":"Container.Section","color":"inherited","children":[{"organism":"PageHeader","color":"inherited","model":{"title":"Debunked: 5 Common Myths About Synthetic Diesel Oil","text":"\u003Cp\u003ESynthetic oil allows all parts of your engine to work together and protect it from damage and failure. There are several preconceived notions about engine oil that are not correct, Shell Rotella is here to help you separate fact from fiction.\u003C/p\u003E\r\n\r\n\r\n\r\n\r\n","image":{"src":"https://rotella.shell.com/en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil/_jcr_content/root/main/section/page_header.shellimg.jpeg/1773250368877/cs19377-ro-amidala-debunked-header.jpeg","alt":"man-drive","width":456,"height":257}},"id":"/content/shell/business/rotella/en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil/jcr_content/root/main/section/page_header"},{"organism":"PromoSimple.Text","color":"inherited","id":"/content/shell/business/rotella/en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil/jcr_content/root/main/section/text","model":{"title":"1. You can’t switch back to mineral oil after using a synthetic oil","text":"\u003Cp\u003ESwitching back to conventional oil from synthetic is absolutely safe. You can change from the 5W-40 synthetic oil you used in the winter to a 15W-40 conventional oil in the spring. We offer Shell Rotella T4 15W-40 triple protection and Shell Rotella T6 15W-40 full synthetic if you want the added benefits of synthetic oil technology.\u003C/p\u003E\r\n\u003Cp\u003E“During colder months, it's a good idea to switch to a lower viscosity oil – in this case, synthetic oil – to provide improvements in engine stability,” explains Karin Haumann, OEM Technical Manager for Shell Lubricants.\u003C/p\u003E\r\n\u003Cp\u003EHaumann adds: “Because a synthetic oil can meet the same OEM specification as a conventional oil, the question is, are you willing to relinquish the inherent benefits a full synthetic product can give you?” With the proven benefits of synthetic, you can use it in your engine all the time.\u003C/p\u003E\r\n"}},{"organism":"PromoSimple.Text","color":"inherited","id":"/content/shell/business/rotella/en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil/jcr_content/root/main/section/text_361838711","model":{"title":"2. Synthetic oil is too expensive","text":"\u003Cp\u003EWhile synthetic blend and full synthetic oils may cost more upfront, the benefits they provide make them worth the investment. “The benefits Shell Rotella\u003Csup\u003E®\u003C/sup\u003E synthetic motor oil provides in terms of engine protection, longer oil drain intervals, and equipment durability over the lifetime of the engine easily outweigh the cost,” said Haumann.\u003C/p\u003E\r\n\u003Cp\u003EShell Rotella\u003Csup\u003E®\u003C/sup\u003E T6 Full Synthetic engine oils provide protection that can save money with enhanced fuel economy capability, without compromising engine protection or durability.\u003C/p\u003E\r\n\u003Cp\u003EKey performance and fuel economy benefits of synthetic include:\u003C/p\u003E\r\n\u003Cul\u003E\r\n\u003Cli\u003ELower oil consumption to help reduce maintenance costs \u003C/li\u003E\r\n\u003Cli\u003EIncreased protection against oxidation for increased fuel economy \u003C/li\u003E\r\n\u003Cli\u003EExcellent corrosion control to help protect key engine parts \u003C/li\u003E\r\n\u003Cli\u003ELow Ash formulation for emissions system compatibility\u003C/li\u003E\r\n\u003C/ul\u003E\r\n"}},{"organism":"PromoSimple.Text","color":"inherited","id":"/content/shell/business/rotella/en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil/jcr_content/root/main/section/text_2093575007","model":{"title":"3. Only newer engines need synthetic oils","text":"\u003Cp\u003ESynthetic engine oils are designed to provide improved protection for a range of extreme working conditions in new and older engines. Whether you’re stop-and-go driving or working in freezing cold or desert heat, synthetic engine oils are designed to:\u003Cbr\u003E\n\u003C/p\u003E\n\u003Cul\u003E\n\u003Cli\u003EImproved engine protection \u003C/li\u003E\n\u003Cli\u003EPromote engine cleanliness \u003C/li\u003E\n\u003Cli\u003EKeep operating temperatures cooler \u003C/li\u003E\n\u003Cli\u003ELubricate the engine quickly when starting in cold weather\u003C/li\u003E\n\u003C/ul\u003E\n\u003Cp\u003EIf your engine is designed for higher performance that will put higher stress on the engine and the oil. It’s best to have a synthetic oil that's better at withstanding that stress.\u003C/p\u003E\n\u003Cp\u003E“It’s well known that \u003Ca href=\"https://rotella.shell.com/en_us/info-hub/diesel-oil-guide/how-oil-additives-work.html\"\u003E\u003Cstrong\u003Esynthetic products can protect engines better than conventional oils\u003C/strong\u003E\u003C/a\u003E,” says Haumann. “Most new vehicles require a XW-40 or lower synthetic blend type oil because it improves startability in heavy-duty engines and offers real advantages in fuel economy.”\u003C/p\u003E\n"}},{"organism":"StandaloneAsset","color":"inherited","id":"/content/shell/business/rotella/en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil/jcr_content/root/main/section/standalone_asset","model":{"image":{"src":"https://rotella.shell.com/en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil/_jcr_content/root/main/section/standalone_asset.shellimg.jpeg/1729808739615/cs19377-ro-amidala-t6lifestyle-1279x905.jpeg","alt":"alone-oil","width":1279,"height":905}}},{"organism":"PromoSimple.Text","color":"inherited","id":"/content/shell/business/rotella/en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil/jcr_content/root/main/section/text_94586312","model":{"title":"4. You can't change brands of engine oil","text":"\u003Cp\u003EAs long as the specifications and approvals of the new oil meet what is required by your engine’s manufacturer, you can switch between brands with no issues. Though several brands of oil may meet the same industry and OEM specifications, they often have different performance levels.\u003C/p\u003E\r\n\u003Cp\u003EShell Rotella\u003Csup\u003E®\u003C/sup\u003E offers a complete portfolio of synthetic and synthetic blend heavy duty engine oils that are suitable for virtually all modern low-emission heavy duty engines and older hard working diesel engines. With its wide range of specifications, and approvals from many of the world’s leading engine makers, the oils are an excellent choice for on-highway fleets, general haul, construction, agriculture, public-transport operators and diesel pick-up trucks.\u003C/p\u003E\r\n\u003Cp\u003E\u003Cb\u003EDrain the oil and you can change brands. Shell Rotella meets or exceeds current CK-4 and other standards\u003C/b\u003E\u003C/p\u003E\r\n"}},{"organism":"PromoSimple.Text","color":"inherited","id":"/content/shell/business/rotella/en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil/jcr_content/root/main/section/text_1411724527","model":{"title":"5. High viscosity oil is best","text":"\u003Cp\u003EWith Shell Rotella T5 10W-30 synthetic blend, you get the strong wear protection of a 15W-40 with the added benefit of fuel savings.\u003Csup\u003E1\u003C/sup\u003E\u003C/p\u003E\r\n\r\n\u003Cp\u003EIn addition, Shell Lubricants has introduced Shell Rotella\u003Csup\u003E®\u003C/sup\u003E T6 10W-30 full synthetic heavy duty engine oil, which provides the benefits of a full synthetic engine oil in the fastest growing viscosity grade for diesel-powered vehicles. The versatile oil offers fuel economy benefits and excellent engine protection for hard working trucks.\u003C/p\u003E\r\n\r\n\u003Cp\u003EShell Rotella\u003Csup\u003E®\u003C/sup\u003E T6 full synthetic engine oils provide protection that can save money with enhanced fuel economy capability, without compromising engine protection or durability. The oils also perform extremely well in heavy duty diesel engines even in extreme temperatures, meeting and exceeding industry performance standards.\u003C/p\u003E\r\n\r\n\u003Cp\u003EShell Rotella\u003Csup\u003E®\u003C/sup\u003E T6 15W-40 Full Synthetic is for diesel engine drivers that prefer the higher-viscosity but still want the benefits of synthetic technology.\u003C/p\u003E\r\n\r\n\r\n"}},{"organism":"CallToAction","color":"brand2","id":"/content/shell/business/rotella/en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil/jcr_content/root/main/section/call_to_action","model":{"links":[{"name":"See Shell Rotella Products","value":"https://rotella.shell.com/en_us/products.html"}]}},{"organism":"PromoSimple.Text","color":"inherited","id":"/content/shell/business/rotella/en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil/jcr_content/root/main/section/text_780798827","model":{"title":" ","text":"\u003Cp\u003E\u003Csup\u003E1\u003C/sup\u003E Compared to Shell Rotella T4 15W-40\u003C/p\u003E\r\n"}},{"organism":"PromoSimple.Text","color":"brand1-subtle","id":"/content/shell/business/rotella/en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil/jcr_content/root/main/section/text_1735796860_copy","model":{"title":"You May Also Be Interested In"}},{"organism":"PromoCard","color":"brand1-subtle","colspan":4,"id":"/content/shell/business/rotella/en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil/jcr_content/root/main/section/promo_962275861_copy","model":{"title":"Drivers: Here’s How Your Behavior Affects your Diesel Truck's Fuel Economy","text":"\u003Cp\u003EYour actions can affect how much fuel you use in surprising ways. 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Find out more as we debunk the 5 most common myths about synthetic diesel engine oil.","links":[{"name":"canonical","value":"https://rotella.shell.com/en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil.html"},{"name":"errorUrl","value":"https://rotella.shell.com/en_us/error.html"},{"name":"hierarchy","value":"en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil"},{"name":"homeTitle","value":"Shell Rotella®"},{"name":"homeUrl","value":"https://rotella.shell.com/"},{"name":"locale","value":"en-US"},{"name":"title","value":"Synthetic Diesel Oil - 5 Common Myths | Shell Rotella®"},{"name":"textDirection","value":"ltr"},{"name":"template","value":"base"},{"name":"contentPath","value":"/content/shell/business/rotella/en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil"},{"name":"externalDisclaimerText"},{"name":"themeMode"},{"name":"lastModified","value":"2026-07-02T20:09:33.124Z"},{"name":"themeName","value":"base"},{"name":"themePath","value":"/etc.clientlibs/amidala/clientlibs/theme-base"},{"name":"themeCss","value":"/etc.clientlibs/amidala/clientlibs/theme-base.ACSHASHb291465fc8d3c7bcefde74d34044b698.css"},{"name":"alternate","children":[{"name":"en-CA","value":"https://rotella.shell.com/en_ca/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil.html"},{"name":"fr-CA","value":"https://rotella.shell.com/fr_ca/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil.html"}]}]},"id":"/content/shell/business/rotella/en_us/info-hub/diesel-oil-guide/debunked-5-common-myths-about-synthetic-oil/jcr_content"}