Posted 2/4/2009 18:38 (#596572 - in reply to #596242) Subject: Re: oil pressure on Duramax
North Dakota
my dad has the duramax and from day one the oil preasure has always been high 70 to 80 psi 90 degrees or -30 it doesnt matter. always run 15w-40. rottela
oil pressure on Duramax
