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Dearfield Co. | We have messed with this extensively. I have came to a conclusion that even though cummins has a 25000 mile interval I don't like it even on road trucks. We went the oil sampling route and have taken a detroit as well as a cat to 45000 miles but the drivers hate it and so do I------its get a garlic smell that isn't pleasant so we still sample but change out at 10k just because thats what I did in the 70s lol | |
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Semi oil change
