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- - 07 GMC 3500 Classic-Durmax (https://67-72chevytrucks.com/vboard/showthread.php?t=250284)

Virginia72SWB4X4

07-19-2007 08:31 PM

07 GMC 3500 Classic-Durmax

I'm at about 5K miles and looking at changing the oil for the first time.

I was considering a synthetic. What brand is recommended if any?

Is mobile 1 used in diesels?

Gary

gmcracing92

07-22-2007 12:03 AM

Re: 07 GMC 3500 Classic-Durmax

our company uses dino oil til 20k, then we switch to 5w40 mobil 1 synthetic. thats with the cummins diesel.

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