DF Sales&Marketing
Oil Tech Moderator
The new api (American petroleum institute) specification for diesel oil changes December 1st, 2016. There will be 2 different classes, fa-4 and ck-4. It is confusing to most and Ford is dissing the ck-4 for their 6.7 liter engines.
Read the attached pdf file for details.
Read the attached pdf file for details.