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Type of oils for Duramax?
My LBZ 07 Duramax has not had its first oil change yet, it has 2856 miles right now. When should I change the oil?
What brands of oils is best? What I know of is Amsoil, Delvac, Royal Purple and Rotella.
I have been running it hard with the Bully Dog, AFE intake and exhaust and I think it may be time to change out the oil, do you not agree?
Bad Max
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