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Cummins Oil Service Bulletin - NHTSA
Released 7/24/20 for the 6.7 Cummins Engines New Oil Usage Information. This bulletin provides information regarding the correct oil grade to use on the 6.7L Cummins usedin the 2019 and newer HD Trucks. The following information is intended to eliminate confusion...- SpyderNut
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- Forum: 5th Gen Powertrains