3%= then maybe 1 mpg on the highway and almost nothing in mixed driving. At least I'd keep the snow out. If I had more $$ I'd make an aero curved sloping back topper out of lexan or similar.
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2011 Ranger white 2wd 2.3 5sp Supercab 4.10 axle
2009 Ranger white 2wd 2.3 5sp longbed 4.10 axle
2004 Ranger white 2wd 2.3 5sp longbed 3.73 axle
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