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Old 02-07-2013, 03:53 PM
wolfman01 wolfman01 is offline
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Originally Posted by gonefishin776 View Post
if it hurts mileage it's because of the additional weight. so i guess the lighter the better. The guys running hard covers probably see the decrease. I think it's been proven that with the tailgate up, a pillow of air forms in the bed of truck that the "rest of the incoming air" rolls off of, essentially an invisible cover. It's when people drop the tailgate, they lose that pillow of air and it actually hurts mileage (which is why I laugh when i see people still doing this).

Regardless, i think the gains/losses will be minimal, i couldn't imagine more than a +/- 1mpg. I would get a cover for practicality purposes, not just to increase MPG. If you do get one, and are worried about mpg, go light as opposed to heavy.
I was looking at the fabric roll up ones as they don't trade off the useability of the bed for carrying large stuff.
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