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Old 03-09-2008, 03:59 PM   #1
Join Date: Mar 2008
Location: Cape Cod Ma
Posts: 60
tv o6 4runner v8 tt roo21ss

Just got an 08 roo 21ss. Itowed it home on saturday in the wind and rain about 40 miles sucked up quarter tank of gas computer said 8-9 mpg had to keep in 4th gear to 65mph. I didnt realize how tall the roo is till i got it home. Does any one make any kind of air deflector to put on my roof to push the air over it should help a lot. I have wdh+sway control+prodigy

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Old 03-10-2008, 11:05 AM   #2
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Join Date: Feb 2008
Location: North Texas
Posts: 37
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Congrats on the new RV. Research that I have read states the deflector will never save enough fuel to pay for itself unless you are towing full time.

If someone knows different, please let me know.


'04 Wildcat 29BHBP

'02 Chevy 2500HD
DMax/ZF-6 Speed, CCLB, 0-70-110 HP VA Tuner,
5" exhaust, H2 Tires/Chrome Wheels (315x70-17),
B&W GN hitch and 5th Wheel Companion,
BrakeSmart Brake Controller
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Old 03-11-2008, 09:04 AM   #3
Join Date: Jan 2008
Location: Texas
Posts: 37
The manual will reflect what total frontage area trailer max is for the vehicle, as far as air deflectors if the trailer front is not totally flat a deflector wont help much, the trailer is likely wider than the truck, and those outside edges catch wind, no deflector on top is gonna change that.

there are a few deflectors out there, but if it aint as wide as the trailer you arn't really doing anything. IMHO
Regards, RJW

2006 Expedition 4x4 w/HD tow package
5.4L 4 speed auto w/OD 3.73
tow rated 8200
2008 Cougar XLite 30FKS
gvwr 7800

Alvarado TX
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Old 08-18-2009, 11:59 AM   #4
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I've got an 05 4Runner sport V8 and just about the same gas mileage I get when towing. I've just resigned myself to this fact and now I feel much better when I leave for a camping trip.
2007 Rockwood Roo 21RS
2005 Toyota 4Runner
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