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LEE BROWN
10-09-2007, 16:48
Whats the most popular engine oil most of you run in Duramaxes? I use Rotella 15w 40.
Luis
10-09-2007, 18:03
I've used AMSOIL 15w-40 since new. Read my post "First Oil
Analysis" :D
Mark Rinker
10-09-2007, 18:05
Mobil Delvac 15/40 synthetic, 10K intervals.
LEE BROWN
10-09-2007, 19:32
On those high milage changes do you still keep the same filter on for all those miles?
Chris_S
10-09-2007, 21:55
RedLine Diesel 15/40, 10K when not towing 7K when towing.