I don't buy the "shell increases drag" claim. I don't care what the wind
tunnel showed. When I installed a cab high shell on my last truck, my
mileage went from 23 to 28 on the highway. When I took the shell off, it
immediately went back to 23. Put it back on, and I was at 28 again. How much
more proof do you need? Real world beats a lab any day.
John
>Somebody had posted some information (wind tunnel stuff) that indicated a
shell actually increased drag (not to mention the >added weight) and was
therefore detrimental to MPG... OTH, a tonneau decreased drag and should
therefore have apositive >effect on MPG. Can't remember the web site or who
posted it but was pretty interesting.
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