SAN ANTONIO. The industry campaign to develop not one but two new API oil-service categories to eventually replace the current CJ-4 spec for heavy-duty diesel engines is on a fast track for new ...
API PC-12 oil specification approved with CL-4 and FB-4 marks available ahead of 2027 licensing and new engine oil ...
For two decades, we have seen a new API oil classification for on-highway heavy duty diesels every few years. Oil formulations had to change to meet the demands of diesel engines facing ...
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