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Engine Oils

The New Oils: An Update on CK-4 and FA-4

Last December, for the first time, the American Petroleum Institute started licensing two different approved heavy-duty diesel engine oils. CK-4 adoption is going largely as expected, but very few fleets are using FA-4 yet – because very few engine makers so far are recommending it.

Truck Engine Teardown Examines FA-4 Oil Protection [video]

New fuel-efficient API FA-4 oils have lower viscosity, leading some to worry about engine protection. Chevron recently completed a 500,000-mile engine teardown at a Georgia trucking fleet that's been testing these oil formulations for four years.

Cummins Extends Oil Drain Intervals to 80,000 Miles

Cummins says X15 Efficiency Series and X15 Performance Series engine owners can extend their oil drain intervals up to 80,000 miles using the free Cummins OilGuard program, which uses engine performance data and oil analysis to safely optimize oil drain intervals.

Chevron Unveils New Delo 400 CK-4 and FA-4 Engine Oils

Chevron unveiled its new line of Delo 400 engine oils meeting the American Petroleum Institute’s new CK-4 and FA-4 heavy-duty diesel oil specifications, offering improvements in fuel economy and engine protection.