Yes, it gave me about a 2-3 mpg improvement on the highway.YELLOWHEMI said:I have heard that if you install one of those fiberglass tonneau covers on the bed that it will help on the gas mileage. Anybody done this and seen mileage improvement?
Mazz said:I have owned many pickups, and have never seen any mileage improvement with a tonneau cover vs. no tonneau cover. It's been debated for many years, and will most likely continue. I'm on the side that says it makes no difference. Hey, I might be all wet, but that's my opinion.