Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Open bed or stock cap which is better mpg-

gutcheck · 03-08-2011, 05:05 PM

Many years ago, I had a F250 with a cap that was higher in the middle by a few inches. After I took it off (not that I tracked it very closely back then, but) my mileage seemed to drop pretty significantly.

As another benefit to having it on, I could park in the Texas sun, with my back to the west in the afternoon, and the cab would stay a lot cooler. Also, the way the air would flow, if I opened the rear window of the cab, but closed the pass-thru window of the cap, I could get a fairly pleasant breeze, similar to having a sunroof.

For only $125, I would think it's certainly worth a try. The benefits extend to beyond just FE.

03-08-2011, 05:05 PM	#12 (permalink)
gutcheck EcoModding Lurker Join Date: Mar 2008 Location: Dallas Posts: 10 8Jetta - '08 VW Jetta S 90 day: 27.24 mpg (US) Thanks: 0 Thanked 0 Times in 0 Posts	Many years ago, I had a F250 with a cap that was higher in the middle by a few inches. After I took it off (not that I tracked it very closely back then, but) my mileage seemed to drop pretty significantly. As another benefit to having it on, I could park in the Texas sun, with my back to the west in the afternoon, and the cab would stay a lot cooler. Also, the way the air would flow, if I opened the rear window of the cab, but closed the pass-thru window of the cap, I could get a fairly pleasant breeze, similar to having a sunroof. For only $125, I would think it's certainly worth a try. The benefits extend to beyond just FE.