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Re: Question on New Diesel Oil Specs
Posted to Technical Discussion Forum on 5/17/2011 14 Replies

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Thanks Micheal.I've looked in GM SI under the Duramx Owners Manual Supplement and all it asks for is an API approved 15W40 with a CJ-4 rating. This was under a 07 model. I believe the new 6.7 Ford Po... Login to read more.

14 Replies Received (View Replies)