Quote:
Originally Posted by Specaled
In my Baby Truck I usually drive with the driver's window and back sliding window open because I have no AC and I hate the heat. I notice that the wind doesn't flow into the truck through the drivers window but from the back window. I'm just wondering what kind of drag this causes if any. Any ideas?
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The static pressure outside the truck is lowest near the wind shield header and A-pillars.Higher pressure in the bed flows in to attempt reaching equilibrium and exits through the window.
I just did 1,379 miles like this and the mpg was good enough that I don't think it's an issue.I suspect that the drag is offset by not operating the AC compressor.