The major diesel engine and truck manufacturers have recently provided their own OEM specifications that connect with the new API CK-4 and FA-4 categories for their new model GHG ’17 diesel engines. Additionally, a few of them have started providing initial guidance for backward compatibility of the new products for their older EPA model diesel engines. Finally, a few have stepped out to also announce support for longer oil drain intervals with their new upgraded OEM specification requirements.
Although a lot of the focus is on API CK-4 products in these announcements, it is clear that there will be greater acceptance of API FA-4 products into the future as more GHG 17 and newer model diesel engines are introduced and older ones are phased out of service. Furthermore, most OEMs are already starting to develop next generation engines and engine oils for launch between 2020 and 2025 – and almost all of the new oil development programs for these engines are focused on low HT/HS SAE 5W-xx viscosity grade use for factory fill to meet upcoming stricter fuel efficiency and emission standards.
API CK-4: Cummins CES 20086
API FA-4: Cummins CES 20087
Both API CK-4 and FA-4 are approved for new GHG ‘17 Cummins X-15 and X-12 (this engine model will not be commercial till 2018) engines. API CK-4 along with Cummins CES 20086 specification oils are also approved for use in older ISX and ISX 15 model engines; API FA-4 is not authorized for anything but X-15 model engines at this time.
With the new categories, Cummins also has announced a 10,000-mile increase in oil drain recommendations (from a maximum 40,000 to 50,000 miles) for new X-15 engines using the new oils.
API CK-4: DFS 93K222
API FA-4: DFS 93K223
Owned by Daimler, Detroit Diesel has approved the backwards compatible API CK-4 for older engines in Freightliner and Western Star trucks. API FA-4 is approved for new GHG’17 model engines along with EPA 10 and EPA 13 older model diesel engines. The company has not announced an oil drain extension, but recommends using the new products in new engines. Detroit Diesel will start factory-filling new model engines with API FA-4 and DFS 93K223 approved oil starting mid-December 2016.
Volvo and Mack
API CK-4: Volvo VDS4.5
API CK-4: Mack EOS 4.5
API CK-4: Renault VI RLD 4
API FA-4: No specification and not allowed for use in EITHER new or older Volvo or Mack diesel engines
Volvo and Mack, both owned by Volvo, have new specifications for API CK-4 but do not allow use of API FA-4 oils in their engines. The Volvo and Mack specifications are built around tighter requirements for improved oil oxidation performance as measured by the new Volvo T13 engine test versus the typical API CK-4 or API FA-4 Volvo T13 requirements.
Volvo is announcing a 10,000-mile oil drain extension (45,000 to 55,000) for new engines using the new VDS4.5 or Mack EOS 4.5 oils.
Navistar does not have its own OEM specification qualification program; it simply uses the API designations. Most Navistar equipment carries Cummins engines, and the recommendations are the same as Cummins, including the oil drain extension. For its own N13 model diesel engine, API CK-4 is recommended for all model diesel engines. API FA-4 is approved for new model GHG ’17 engines only. Navistar will be factory-filling with API CK-4 SAE 10W-30 diesel engine oil.
API FA-4 (to be announced in future)
PACCAR uses the API designations for its specifications with no specific OEM specification qualification program included. Kenworth and Peterbilt trucks are installed with either a PACCAR MX or Cummins diesel engine. Both engine models will be factory filled with Delo 400 XLE Synblend SAE 10W-30 (API CK-4 ready) beginning mid-September 2016. API FA-4 oils may be used with new Cummins X-15 diesel engines in their trucks, however PACCAR has not commented yet on use of API FA-4 oils for the PACCAR MX GHG 17 or older model engines.