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Old 08-18-2011, 07:08 AM   #1
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Towing MPG

I presently tow my Eagle 322FKS with a Chevy Truck with the 6.0 gas engine. Usually get somewhere between 7-10mpg towing depending on the hills, average is 8. I am considering trading for a Diesel Duramax. What kind of towing mileage can I expect? I know I will increase the torque, and a little horsepower over the gas. Is it worth the additional 8 grand option?
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Old 08-18-2011, 08:26 AM   #2
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buckeyejim--- You will probably get a lot better mileage with the duramax than the gas with regular driving, a little bit better while towing, but it would probably take up to 200k miles to make up the extra $. I guess unless you are completly disatisfied, or do a lot of driving stick with the 6.0. Larry.
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Old 08-18-2011, 08:26 AM   #3
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I tow my 5er with a f350 6.0 diesel and get between 11-12 MPG cant speak for the duramax.
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Old 08-18-2011, 08:57 AM   #4
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Mileage depends on many things.. how fast do you tow... RV tires are not made to go over 65 mph also the co-efficient of drag increases dramatically over 65. I love my diesel and at 65 mph with the 8000 lb jayco 303 TT behind me I get 13 mpg. but I also have the truck loaded with all the toys for camping that I "need" dirt bike, bicycle..etc etc..
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Old 08-18-2011, 09:05 PM   #5
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Towing 7500 + lbs. I get 12.5 to 13 mpg in my Duramax but only when I do not have a strong headwind and keep it at 60. Most of my short trips to my membership campground (90 miles) I push it because I want to get there in a hurry so I creep up to 65 to 67 but still get 11 something mpg. One long trip (800 miles up to 8600 elevation and some headwinds along the way) I averaged 11.8 for the entire trip. What I like most about my Duramax is the torque, especially while climbing Southern Rocky Mountain inclines. That alone makes it worth the extra $$$ to me but dollarwise, I do believe 19H above...it would take a lot of miles to break even.
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Old 08-18-2011, 11:56 PM   #6
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A lot of things come into play when making a gas/diesel comparison.

1. Gas is always cheaper.
2. The extra $$$ to buy the diesel truck.
3. The cost of oil changes on a diesel. (3 gal of oil)
4. The expence of fuel filters on the diesel.
5. Diesel costs more to insure. (with my company anyway)

How many miles per year do you tow your trailer vs how many miles driving empty.

My truck is a 3500 Dodge with the cummins and 6 sp auto with exhaust brake. Do I really need it??? Nope but I WANTED it.
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Old 08-19-2011, 04:24 AM   #7
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I am retired and the guy that you wish would get out of your way, but I get an average of 12.5 mpg while towing my 5'er. At a steady speed on perfectly flat roads after getting up to speed it gets 14.5, but that is wishful thinking for an overall number. I tow between 55 and 60 mpg. My 5'er weighs 14,000.
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Old 08-19-2011, 07:10 AM   #8
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My rig is about the same as edatlanta except I have a 6.0 F350. I try to keep it in the sweet spot at 65 mph. I avg 12.1 with my setup.
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Old 08-19-2011, 08:26 AM   #9
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I do a 4000 mile round trip every year.. Sask Canada to SoCal and average 13 mpg on each trip... keeping the cruise set to 60 and the tranny in OD tow/haul.
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Old 08-19-2011, 01:20 PM   #10
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My 2003 F250 6.0 Diesel with the 31.5 BHLT loaded at 60-65 has been getting 12.5 on average. Although the diesel is more to maintain, I love the performance and smoothness of a diesel. I'm not a GM guy, but I suspect that the Duramax is a decent engine with good economy and power as well. Go diesel or gas? Depends on how much you tow.
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