API: Fleets Have to be Conscious of New Engine Oils, Heed OEM Suggestions Posted on July 29, 2016July 29, 2016 by Costa Oil - 10 Minute Oil Change API: Fleets Need to be Aware of New Engine Oils, Heed OEM Recommendations Information When licensing and distribution start for the 2 new heavy-duty diesel engine oils in December, it is paramount for fleets and owne …read more Sending User Review 0 (0 votes)