Are API CK-4 and API FA-4 suitable for on and off-highway applications?
CK-4 & FA-4 offers to engine oils that are important for diesel engines of all types, even off-highway! With improved oxidation stability, wear performance, and shear stability, CK-4 & FA-4 oils deliver additional benefits to customers around engine durability, oil drain interval extension, and a wider range of products formulated for a wide range of off-road applications.
API CK-4 can be used to replace all API CJ-4 (previous category of oil) use scenarios for both on- and off-highway uses. API FA-4 is recommended in a much more limited set of engines/applications and is not recommended in off-highway applications.
How can I tell which CK-4 & FA-4 oil is right for my fleet?
Selecting the right engine oil product for your fleet starts with an evaluation of the types of engines (make, model, vintage) that make up the fleet. As your local Chevron representative, Domestic Fuels & Lubes would be happy to work with you and recommend products that carry the industry and OEM specification credentials along with the viscosity grade options that meet the engine maker's requirements. This will be increasingly important with CK-4 & FA-4 since there will be even more choices and new OEM requirements and restrictions.