Gasoline Mileage improvement after break in.
This is the first vehicle that I have ever owned, and I have owned many, that actually improved its fuel mileage a lot after the first 5,000 miles. It is a Silverado 2500HD with the 6.0 gasoline engi...
Forum Discussion
bob_nestor wrote:
Interesting. My previous RV was on an E350 chassis with the V-10 so I did a lot of searching for information on the V-10. One article I remember reading indicated the on-board computer is factory programmed to run a rich mixture for the first 10,000 miles to help with the break-in period. If really true, I'd assume that this technique may be used by other manufacturers as well. Sorry I don't have a reference to that original article.
Did you notice any better mpg's after 10,000 miles?
