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Re: New 3.0L Duramax diesel care, oil pump belt?
Posted to Open Discussion Forum on 6/25/2020

Geoff is spot on !

"Severe" is when you drive it "Normal" is just sitting in the garage, barn, street etc.

The best advise I have learned about Diesels is use CLEAN quality fuels, CLEAN OE spec quality oils and filters (factory parts.) Same for air filters... Login to read more.