New API Diesel Engine Oil Specifications CK-4 and FA-4

As diesel engine designs evolve, so do the oils needed to lubricate those engines. The current industry standard, API CJ-4, was introduced in 2006. Two new diesel engine oil specifications will replace API CJ-4 and become the new OEM recommendation in December of 2016. CK-4 will replace CJ-4 with the same minimum High Temperature/High shear[…]