Topper while pulling TT help MPG?
I'm curious has anyone had experience with a topper while pulling a TT? How does it effect MPG vs. no topper? I'm thinking a truck with a high topper would help make the truck/TT combo more aerodynam...
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X2 those crazy two guys on TV, showed it made no difference.best fuel mpg is to slow down stay at 55,to 60 mph.
