Kevin Ferrick Sr. Manager, Engine Oil Licensing and Certification System Global Industry Services 1220 L Street, NW Washington, DC 20005-4070 USA Telephone 1-202-682-8233 Fax 1-202-962-4739 Email ferrick@api.org www.api.org/eolcs June 2, 2016 TO: API Engine Oil Licensing and Certification System (EOLCS) Licensees API Lubricants Group Other Interested Parties SUBJECT: Technical Bulletin 1 API 1509, Engine Oil Licensing and Certification System 17th Edition, September 2012 (Addendum 1 October 2014) API’s Lubricants Committee has approved by letter ballot the following changes to the 17th Edition of API 1509 (see Attachments 1 and 2). These changes result from the committee’s adoption of API Service CK-4 and API Service FA-4, new diesel engine oil service categories. A complete revision of API 1509 is currently being prepared that will incorporate all changes to the document through CK-4 and FA-4. Of all the changes approved or under consideration, the most important are the following:  Starting December 1, 2016, API Service CK-4 and API Service FA-4 may be licensed for use in the upper portion of the API Service Symbol “Donut.”  Oil marketers may license oils meeting API Service CK-4 as API Service CJ-4, API CI-4 with CI-4 PLUS, CI-4, and CH-4. Marketers have a number of options to consider as they plan the introduction of the new oils:  Marketers are free to identify qualifying oils as meeting API Service CK-4 and API Service FA-4 prior to the December 1 first licensing date but must avoid statements that imply API certification or licensing of CK-4 or FA-4 in advance of that date.  Marketers that want to claim their products are licensed by API as meeting CK-4 or FA-4 on the first licensing date must apply for licensing of the CK-4 or FA-4 products through the on-line application system at https://engineoil.api.org/AccountManager/WelcomeMarketer. API will process applications as they are received, but the right to claim API licensing against the CK-4 or FA-4 standard will not be allowed until December 1, 2016.  Marketers with approved API CK-4 or FA-4 products may not use CK-4 or FA-4 in the API Donut until December 1, 2016. These changes are effective as of December 1, 2015, unless otherwise noted. If you have questions, please do not hesitate to contact me. Sincerely, Attachment 1 Technical Bulletin 1, 17th Edition API 1509 5.X.X.X CK-4—For 2017 Heavy-Duty Diesel Engine Service API Service Category CK-4 describes oils for use in high-speed four-stroke cycle diesel engines designed to meet 2017 model year on-highway and Tier 4 non-road exhaust emission standards as well as for previous model year diesel engines. These oils are formulated for use in all applications with diesel fuels ranging in sulfur content up to 500 ppm (0.05% by weight). However, the use of these oils with greater than 15 ppm (0.0015% by weight) sulfur fuel may impact exhaust aftertreatment system durability and/or oil drain interval. These oils are especially effective at sustaining emission control system durability where particulate filters and other advanced aftertreatment systems are used. API CK-4 oils are designed to provide enhanced protection against oil oxidation, viscosity loss due to shear, and oil aeration as well as protection against catalyst poisoning, particulate filter blocking, engine wear, piston deposits, degradation of low- and high-temperature properties, and soot-related viscosity increase. Engine oils that meet the API Service Category CK-4 designation have been tested in accordance with the ACC Code of Practice and may use the API Base Oil Interchangeability Guidelines and the API Guidelines for SAE Viscosity-Grade Read Across. API CK-4 oils exceed the performance criteria of API CJ-4,CI-4 PLUS, CI-4, and CH-4 and can effectively lubricate engines calling for those API Service Categories. When using CK-4 oil with higher than 15 ppm sulfur fuel, consult the engine manufacturer for service interval recommendations. Marketers may license products meeting API CK-4 requirements as API CJ-4, CI-4 PLUS, CI-4, and CH-4. 5.X.X.X FA-4—For 2017 Heavy-Duty Diesel Engine Service API Service Category FA-4 describes certain XW-30 oils specifically formulated for use in select high-speed four-stroke cycle diesel engines designed to meet 2017 model year on-highway greenhouse gas (GHG) emission standards. These oils are formulated for use in on-highway applic