The American Petroleum Institute is introducing a special Service Symbol Donut designed to help buyers differentiate between the new API FA-4 and CK-4 service categories for diesel-engine oils.
Chevron Launches Online PC-11 Education Campaign
Chevron has launched a PC-11 Public Education Campaign aimed at “building awareness and clarity” about the new API CK-4 and API FA-4 oil-service category specs approved last week.