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-   -   Curious about fuel mileage for tow vehicles (https://www.irv2.com/forums/f45/curious-about-fuel-mileage-for-tow-vehicles-576637.html)

PhilAndTee 07-31-2022 03:52 PM

2013 Ford Explorer 3.5L NA. Towing a 5000# fully loaded trailer. At 65 about 11 mpg, as low as 6 mpg into a heavy headwind.

Tomahawk 08-05-2022 05:07 PM

On a typical trip to Sequoia NP, I go from sea level to 4100ft, back to near sea level, then up to 6800 ft. For the entire trip, I usually average about 14MPG. I have done this at least five times. In California the speed limit is 55 when towing and try to stick to that +/-5 MPH. I usually fill up before leaving home and again right before climbing into SEKI. Fill up at Stony Creek Lodge before heading home. I can make it home without filling up again but usually top off somewhere as a precaution against head winds and traffic. 3.21 rear end, 4500 lb tailer loaded, and 55 MPH help improve mileage.

Bobertgoes 08-06-2022 07:49 AM

Quote:

Originally Posted by Tomahawk (Post 6268151)
On a typical trip to Sequoia NP, I go from sea level to 4100ft, back to near sea level, then up to 6800 ft. For the entire trip, I usually average about 14MPG. I have done this at least five times. In California the speed limit is 55 when towing and try to stick to that +/-5 MPH. I usually fill up before leaving home and again right before climbing into SEKI. Fill up at Stony Creek Lodge before heading home. I can make it home without filling up again but usually top off somewhere as a precaution against head winds and traffic. 3.21 rear end, 4500 lb tailer loaded, and 55 MPH help improve mileage.

I know how thats rights. I leave from about 800 feet and go over 300 then back down to 2000 and I leave from Oakesville point then pass through Lones Pine, and get gas there, it is usually around the speed limit too, +/-10 though in my case, then its all downhill to Lima and that is always tailwinds too, and when I fill up again half way home it is in Dalkonton and very expensive gas there, but as the oldest and kookiest of forum users here always say, spend your money, dont worry about gas prices, dont worry about getting cheaper gas, just buy the most expensive, sometimes 55 cents more per gallon, and buy it and dont worry, but these are the same senile ones that say go out and buy a new RV for 100,000 bucks as soon as the first little issue arises in your RV, so maybe just ignore most of what they say, anyhow, going down it is expensive gas, but after that I can make it home. And thats going via the route through Bomans, not around Holiday. thanks

Dave Pelletier 08-06-2022 09:29 AM

My '03 CTD 305/555, pre emissions diesel averaged 12.3 mpg towing approx 10k at reasonable speeds on secondary highways. I haven't had time to check my new 2022 6.7PSD towing my 10k 25RDS Outdoors RV

rideandfly 08-06-2022 10:03 AM

Been experimenting using cruise control during July while towing our travel trailer with over 10,000 miles on the Tundra’s odometer by the end of this trip.

Tundra’s on board MPG indicator is accurate and was used for the following two test using cruise control. Both of the following test were over 300 miles each on interstate/4 lane highways.

2022 2WD SR5 Tundra V6 twin turbo with street tires on Tundra & Camper. TV tire pressures 40 PSI and Camper’s tire pressures 50 PSI. Camper's weight between 4900 to 4950 pounds with empty grey and black water tanks. Rig weight is around 10,900 pounds. Check Rig & TV/Camper weights periodically with CAT scales.

Set cruise at 63MPH yielding 61MPH GPS speed. Tow haul mode used with 7th gear. Engine speed was 2150 RPM.

During the test while climbing a 5% grade reduced speed to 55MPH and dropped down to 6th gear.

One way test from Crossville TN (TN plateau area) to Denver NC (300+miles) yielded 15.8 MPG.

Round trip from Crossville TN to Howenwald TN and back to Crossville (300+ miles) yielded 15.5 MPG.

Should see better MPG in the flat lands, will see.


https://photos.smugmug.com/2022/i-P9...IMG_0716-L.jpg

Gammel 08-06-2022 04:48 PM

Got 12.8 towing our 8000 lb ORV last trip on a route with lots of big hills.

mmartin_tdc 08-10-2022 10:27 PM

I did a 4500 mile trip from SF area to Arkadelphia AR, Went out I40 and back I80.
Hand calculated MPG towing a 30' 9500# Crusader 260 RLD 5th wheel, 11.13MPG.
This includes all the up hills, down hills, into the wind, with the wind. The long up hills, truck maintained 65 MPH. Worst tank I got was right at 9 MPG with a 26 MPH head wind most of the 600 mile day.
2012 Ram CTD with 4:10 gears.


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