towing with empty box or topper
#1
towing with empty box or topper
I have a 01 2500 4x4 quad cab with 8' box and I usually pull a tow-behind travel trailer. I would like to know what kind of real milage gain anyone has had when adding a cab-high topper or a toneu cover. also, has anyone added AirTabs to the cab?
Thanks for the feedback
Thanks for the feedback
#2
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Not sure about on a late-model diesel truck, but my old '78 D150 would get 2-3mpg better on the freeway with the topper on. That was with a slant six though, so I could actually FEEL the extra drag on the truck with the topper off, too...
#5
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Ive got a cab high cap, i didnt notice any differance in towing mileage (30 ft TT) My mileage went up when I installed the XZT tow box, and its tolerable if I keep it between 60 and 65.
#6
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I towed and driven empty with and without my tonneau cover and haven't noticed any difference with or without it. Had a tonneau on the 97 also and same thing, same mileage with or without the cover.
Will
Will
#7
Proprietor of Fiver's Inn and Hospitality Center
Look at the truck races - - they have studied drag and air flow a lot more than we will. They all have a slopped bed cover starting from the cab roof down to the back. A topper has been tested to show some improvement, but never have I seen any testing with toppers while towing a trailer. The tests also show leaving the tail gate down decreases mileage - - so, there goes the vented V tailgate for fivers. Again, I have never seen any tests towing a fiver with a vented tailgate or with tailgate down.
The street talk on cab roof wings for towing will have one guy gaining 5 mpg while another says all it does is move the bug line higher on the front of his fiver while reducing his mileage when not towing (obviously with the wing down in the stowed position). Overall the concensus seemed to be no gain with a wing.
Bob
The street talk on cab roof wings for towing will have one guy gaining 5 mpg while another says all it does is move the bug line higher on the front of his fiver while reducing his mileage when not towing (obviously with the wing down in the stowed position). Overall the concensus seemed to be no gain with a wing.
Bob
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#9
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i think myth busters touched on this and said you actual get better gas mileage with a open bed and tailgate up but a cap or cover is your best bet.
check out this link http://www.trucktrend.com/features/c...yth/index.html
check out this link http://www.trucktrend.com/features/c...yth/index.html
#10
vent gate milage
Just a little follow-up. I do about 3500 miles a week and when I tow a 5th wheel I get better milage with the vent gate over the stock one. This could be from pointing the airfoow down and not at the front of the trailer.
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