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Been looking for information and people with experience with the GMC 6.0L. I've gone from 9MPG on a good day to 15MPG. I operate oil and gas wells. And when I bought this truck i though it was a lemon with that mileage. But the more I looked into it. The more i found that we didnt leave the...

I started operating in the oil and gas field last year. Bought myself a 2006 2500hd with a 6.0L. Hehe, never looked into engines before buying, doh!. Anyway what I run is a K&N Cold Air Intake ($360), with a SuperChip($450) and a Helix Power Tower Plus Throttle Body Spacer($160). Pushed a...