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Old 05-30-2012, 01:21 PM   #1
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Towing MPGs ??

I would like to hear more from people with actual mpg measurements they have calculated when pulling different weight trailers and their speed. I have had my 19RR Gray Wolf for about a year now. I towed it for a year with my 2003 Toyota Sequoia that had the old 4.7 liter V8 and it had the tow package. While I don't consider myself a slow driver, even running at 65 mph, I could only get about 7 to 7.5 mpg with such a small V8. The 19RR is only about 4100 dry and even with my 600# bike, I figured I was towing 5500 max.

Jump to last weekend. The end of April I traded in my Sequoia for a 2012 Tundra. I went with the larger 5.7 liter V8 that has 401 ft-lbs of torque, a 6 speed automatic (versus the 4 speed on the Sequoia) and the 4.30 rear end that comes with the 5.7 and the tow package. I first noted that unlike the Sequoia that locked overdrive (4th gear) out completly (even going down hill), the tow/haul mode in the new Tundra allowed the transmission to upshift to 5th on the flats and even 6th going down hill. This with running about 2100 rpms in 5th gear at about 62 mph, I figured I would see a big increase in gas milage. I was disappointed and got 8.5 mpg on the first tankful, using cruise control at about 65 mph (I don't recommend cruise control, because it is constantly downshifting to 4th gear on every incline to maintain the exact speed), to my drive home where I did not use cruise control, allowed some slowing going up inclines and averaged about 62 mph. Even slowing down to 62 and trying to keep it out of 4th gear, I only got 8.9 mpg on the return trip's tank.

While I know Diesels will out perform in pulling and get in the low teens, I have heard of so many with gas V8 engines claiming they get 10 mpg towing much heavier rigs than mine. Maybe they drive 50 mph?
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Old 05-30-2012, 01:40 PM   #2
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2005 silverado 4×4 6.0 liter gas 3/4 ton pulling 11k
9.0 to 10.0 mpg
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Old 05-30-2012, 01:46 PM   #3
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HeyTom - I can never get the mileage others get either while towing. With my 2010 5.7 Tundra I get 18-19mpg average not towing. I am really happy with that. Towing my SP-295 which weighs in at a low 5150# dry and is a nice, low, smooth TT I only manage 8-10 at best. 10 is on totally flat roads at 50-55mph. I tried babying the throttle, lowering speed, using Tow/Haul vs. S mode, etc. Nothing mattered, it is just stuck at that mileage.
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Old 05-30-2012, 01:50 PM   #4
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Quote:
Originally Posted by CHD Dad
HeyTom - I can never get the mileage others get either while towing. With my 2010 5.7 Tundra I get 18-19mpg average not towing. I am really happy with that. Towing my SP-295 which weighs in at a low 5150# dry and is a nice, low, smooth TT I only manage 8-10 at best. 10 is on totally flat roads at 50-55mph. I tried babying the throttle, lowering speed, using Tow/Haul vs. S mode, etc. Nothing mattered, it is just stuck at that mileage.
I'm thinkin you should feel lucky since most that are getting 9 and ten towing are only getting 12 to 13 not.
I rarely see 14 mpg.
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Old 05-30-2012, 01:59 PM   #5
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Well the 18-19mpg is great and I couldnt be happier. I love the truck overall and is my daily driver. I was hoping for more when towing a light camper. I towed a Salem 26TBUD in the past and my mileage was 8-9 at most. I hoped dropping 900# and having a lower, smoother TT would help more than 1mpg.
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Old 05-30-2012, 02:08 PM   #6
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If I didn't have a Ford diesel, I'd have a new EcoBoost. Go drive one. With the tow package you can pull 11k, and it is Fords flagship tow vehicle in the 1/2 ton class. The 5.0 V-8 doesn't compare.
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Old 05-30-2012, 02:08 PM   #7
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You must be babying it when unloaded. Pretty good mileage for the Tundra from what I had researched. Most guys stated around 14 unloaded on 91+ octane and 12-13 avg on 87. Keep it up if you can manage 18

I have too much of a lead foot around town, but get 15-16 hwy (65-70MPH) with the older Ram MDS Hemi on 91+ on CC. It's been 9-10 towing 5800lbs so far, so don't feel too bad for the towing numbers
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Old 05-30-2012, 02:36 PM   #8
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I have a 2010 Tundra and get 15.5 - 16.5 avg unloaded and 8.5-9 towing.
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Old 05-30-2012, 03:41 PM   #9
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Thanks for the feedback guys. I have not had mine on the highway for any extended trips without a trailer. I got 13.9 on a highway trip pulling a 5x8 Utility trailer, but even with that ramp being wire-mesh, it creates a lot of wind drag and at 65 to 70 mph wind drag means a lot.

The funny thing that concerned me about the mpg was my father-in-law was camping with us this memorial day weekend. He too has about a 20' trailer (not quite as tall as my 19RR) but is 1200# lighter and a single axle camper (KZ Sportsman) and he pulls his with his old 2002 Chrysler Town and Country Minivan and it only has the 3.0 V6 with the tow package, not the 3.8 and a 4 speed automatic. He was running right with me at 65 mph, and though the old V6 was working much harder than my new Tundra (rpm wise), he was getting the same 9 mpg at the pumps! I was thinking with 401 ftlbs of torque I should be getting better than him, but not an apples to apples comparison... lighter trailer, slightly shorter so less wind block and how long could that Town and Country keep that up? Though the gas milage was not as much of an improvement over my 03 Sequoia as I expected, I have to say, the new 5.7 Tundra pulled the trailer with little effort and starting out from a dead stop, you don't have to push the engine nearly as much as the old 4.7 liter in the Sequoia. Plenty of power and pep.
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Old 05-30-2012, 03:50 PM   #10
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I have a 2012 F250 Lariat with the new 6.2L gas engine. I'm getting 9 mpg pulling a 12000 lb 5th wheel and 13-14 unloaded on the highway.
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