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.
A new generation of engine oils is in the North American market, passing a battery of tests developed for specific engine brands. But the work of convincing buyers about the related features and benefits of CK-4 and FA-4 oils continues.
New motor oils are coming to truck engines and lubricant marketers near you this December; here's what you need to know.
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.
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.
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