New Diesel break in period
Some one on this site mentioned that I should drive my 2013 GMC 3500 Duramax a certain number of miles before I started towing with it.....Does any one know what that figure really is or where I can f...
Forum Discussion
ScottG wrote:
It's in your owners manual (or at least always has been) and they tell you to break it in for 500 miles for the benefit of the differential.
It isn't for the engine, it is to allow the differential gears to seat properly.
