The next-gen heavy-duty engine oil standard (PC-12) has been formally approved, announced the American Petroleum Institute, which also introduced the new CL-4 and FB-4 “donut” certification marks ...
Tanks and bottles of heavy-duty diesel engine oil throughout North America will soon look a little different. The American Petroleum Institute (API) plans to officially roll out its next heavy-duty ...
New CL-4 and FB-4 engine oils are coming in 2027. Foodliner wants to know whether they could support longer oil drains, but it won’t change its maintenance schedule without data from its own trucks.
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