{"organism":"Page","children":[{"organism":"Container.Raw","children":[{"organism":"Metadata","model":{"title":"PC-12 is the next generation heavy duty diesel engine oil","text":"\u003Cp\u003EThe purpose of the API PC-12 engine oil specification is to support the needs of new diesel engine technologies driven by efforts from the California Air Resources Board (CARB) and the Environmental Protection Agency (EPA) to further reduce CO₂ emissions, in collaboration with engine manufacturers represented by the Engine Manufacturers Association (EMA).\u003C/p\u003E\r\n","links":[{"name":"PC 12 is the next generation heavy duty diesel engine oil specification being developed by the American Petroleum Institute (API) for internal combustion diesel 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API PC-12 engine oil specification is to support the needs of new diesel engine technologies driven by efforts from the California Air Resources Board (CARB) and the Environmental Protection Agency (EPA) to further reduce CO₂ emissions, in collaboration with engine manufacturers represented by the Engine Manufacturers Association (EMA).\u003C/p\u003E\r\n","image":{"src":"https://www.shell.us/business/fuels-and-lubricants/lubricants-for-business/lubricants-services/industry-articles/shell-rotella-fleet-newsletter/pc-twelve-june/_jcr_content/root/main/section/page_header.shellimg.jpeg/1781044610259/pc-twelve-june.jpeg","width":3837,"height":1680}},"id":"/content/shell/countries/united-states/en_us/business/fuels-and-lubricants/lubricants-for-business/lubricants-services/industry-articles/shell-rotella-fleet-newsletter/pc-twelve-june/jcr_content/root/main/section/page_header"},{"organism":"PromoSimple.Text","id":"/content/shell/countries/united-states/en_us/business/fuels-and-lubricants/lubricants-for-business/lubricants-services/industry-articles/shell-rotella-fleet-newsletter/pc-twelve-june/jcr_content/root/main/section/text","model":{"text":"\u003Cp\u003E \u003Cb\u003EWhat will the new engine oil specifications be called once finalized, and what is the first licensing date from API?\u003C/b\u003E\u003C/p\u003E\n\u003Cp\u003EThe finalized specification names are API CL-4 (replacing CK-4) and API FB-4 (replacing FA-4), with a first license date of January 1, 2027.\u003C/p\u003E\n\u003Cp\u003E\u003Cb\u003EWhat is the difference between PC-12A and PC-12B?\u003C/b\u003E\u003C/p\u003E\n\u003Cp\u003EThe two subcategories, initially referred to as PC-12A and PC-12B, are now named API CL-4 and API FB-4, respectively. CL-4 oils will be backward-compatible with today’s CK-4 engine oil and can be used as a direct replacement. FB-4 oils are lower-viscosity, fuel-economy formulations intended for newer engine platforms where durability and efficiency must be balanced.\u003C/p\u003E\n\u003Cp\u003E\u003Cb\u003EWill CL-4 and FB-4 engine oils replace the current CK-4 and FA-4 standards and will they be backward compatible?\u003C/b\u003E\u003C/p\u003E\n\u003Cp\u003ECL-4 and FB-4 will replace CK-4 and FA-4 as the most advanced HDEO categories. CL-4 oils will be backward compatible with CK-4 oils, making them suitable for use in both new and older engines. FB-4 is engineered for next-generation engine designs focused on improved fuel efficiency and reduced emissions and will serve as a suitable replacement for applications currently using FA-4.\u003C/p\u003E\n\u003Cp\u003E\u003Cb\u003EHow does Shell test and validate their new PC-12 engine oils?\u003C/b\u003E\u003C/p\u003E\n\u003Cp\u003EShell uses a combination of extensive laboratory testing and real-world field trials across a diverse fleet of vehicles. This includes thousands of hours of controlled bench testing and millions of miles of fleet testing in harsh, real-world conditions. These tests evaluate critical performance areas, including oxidation control, wear protection, viscosity stability, elastomer compatibility, and aftertreatment system performance.\u003C/p\u003E\n\u003Cp\u003E\u003Cb\u003EHow has Shell been involved with the development of PC-12 engine oils?\u003C/b\u003E\u003C/p\u003E\n\u003Cp\u003EShell has played a leading role in developing PC-12 engine oils since 2021, conducting both lab and real-world testing of next-generation, low-viscosity Shell Rotella formulations. These efforts ensure performance for both new and legacy engines. Karin Haumann, Shell’s OEM Technical Manager, chairs the API New Category Development Team, overseeing PC-12 development and working closely with OEMs, engine manufacturers, and additive suppliers.\u003C/p\u003E\n\u003Cp\u003E \u003Cb\u003EDo lower viscosity oils increase engine wear?\u003C/b\u003E\u003C/p\u003E\n\u003Cp\u003EWhen properly formulated and validated, such as Shell’s upcoming API FB-4 oils, lower-viscosity oils will not increase engine wear. These oils are extensively tested to ensure wear protection, even under high-load, high-temperature conditions, while offering improved fuel efficiency.\u003C/p\u003E\n"}}],"id":"/content/shell/countries/united-states/en_us/business/fuels-and-lubricants/lubricants-for-business/lubricants-services/industry-articles/shell-rotella-fleet-newsletter/pc-twelve-june/jcr_content/root/main/section","model":{}}],"id":"/content/shell/countries/united-states/en_us/business/fuels-and-lubricants/lubricants-for-business/lubricants-services/industry-articles/shell-rotella-fleet-newsletter/pc-twelve-june/jcr_content/root/main","model":{}},{"organism":"Container.Footer","children":[{"organism":"Breadcrumb.Large","model":{"links":[{"name":"Home","value":"https://www.shell.us/"},{"name":"Business","value":"https://www.shell.us/business.html"},{"name":"Fuels and Lubricants ","value":"https://www.shell.us/business/fuels-and-lubricants.html"},{"name":"Industrial Lubricants","value":"https://www.shell.us/business/fuels-and-lubricants/lubricants-for-business.html"},{"name":"Services","value":"https://www.shell.us/business/fuels-and-lubricants/lubricants-for-business/lubricants-services.html"},{"name":"Lubricants articles","value":"https://www.shell.us/business/fuels-and-lubricants/lubricants-for-business/lubricants-services/industry-articles.html"},{"name":"Shell Rotella Fleet Newsletter","value":"https://www.shell.us/business/fuels-and-lubricants/lubricants-for-business/lubricants-services/industry-articles/shell-rotella-fleet-newsletter.html"},{"name":"PC 12 is the next generation heavy duty diesel engine oil specification being developed by the American Petroleum Institute (API) for internal combustion diesel engines.","value":"https://www.shell.us/business/fuels-and-lubricants/lubricants-for-business/lubricants-services/industry-articles/shell-rotella-fleet-newsletter/pc-twelve-june.html"}]},"id":"/content/shell/countries/united-states/en_us/business/fuels-and-lubricants/lubricants-for-business/lubricants-services/industry-articles/shell-rotella-fleet-newsletter/pc-twelve-june/jcr_content/root/footer/breadcrumb"},{"organism":"Container.Raw","ref":"https://www.shell.us/business/_jcr_content/root/footer/inherited_copy.model.json","id":"/content/shell/countries/united-states/en_us/business/fuels-and-lubricants/lubricants-for-business/lubricants-services/industry-articles/shell-rotella-fleet-newsletter/pc-twelve-june/jcr_content/root/footer/inherited","model":{}}],"id":"/content/shell/countries/united-states/en_us/business/fuels-and-lubricants/lubricants-for-business/lubricants-services/industry-articles/shell-rotella-fleet-newsletter/pc-twelve-june/jcr_content/root/footer","model":{}}],"id":"/conf/shell/settings/wcm/templates/base/structure/jcr_content/root","model":{}}],"model":{"title":"PC 12 is the next generation heavy duty diesel engine oil specification being developed by the American Petroleum Institute (API) for internal combustion diesel engines.","text":"The purpose of the API PC-12 engine oil specification is to support the needs of new diesel engine technologies driven by efforts from the California Air Resources Board (CARB) and the Environmental Protection Agency (EPA) to further reduce CO₂ emissions, in collaboration with engine manufacturers represented by the Engine Manufacturers Association (EMA).","links":[{"name":"canonical","value":"https://www.shell.us/business/fuels-and-lubricants/lubricants-for-business/lubricants-services/industry-articles/shell-rotella-fleet-newsletter/pc-twelve-june.html"},{"name":"hierarchy","value":"en_us/business/fuels-and-lubricants/lubricants-for-business/lubricants-services/industry-articles/shell-rotella-fleet-newsletter/pc-twelve-june"},{"name":"homeTitle","value":"Business"},{"name":"homeUrl","value":"https://www.shell.us/business.html"},{"name":"locale","value":"en-US"},{"name":"title","value":"PC 12 is the next generation heavy duty diesel engine oil specification being developed by the American Petroleum Institute (API) for internal combustion diesel engines. | Business"},{"name":"textDirection","value":"ltr"},{"name":"template","value":"base"},{"name":"contentPath","value":"/content/shell/countries/united-states/en_us/business/fuels-and-lubricants/lubricants-for-business/lubricants-services/industry-articles/shell-rotella-fleet-newsletter/pc-twelve-june"},{"name":"externalDisclaimerText","value":"Shell plc Legal Disclaimer\r\n\r\nYou are now leaving the Shell US website.\r\nThe link you have selected will direct you to a website that is not controlled by Shell plc or any member of the Shell Group. 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