Fuel economy and new engine oils
Engine oil makers weigh in on the new oil formulations to help meet EPA improved fuel economy standards.
Demistifying CK-4 and FA-4 oils: What you need to know about compatibility, and more
The most important thing that fleets need to know about CK-4 oils, according to Len Badal, global commercial brand manager for Chevron Lubricants, is that they are fully compatible, and there should be no concern if the two are mixed…