Few things. 2003 Duramax: 23 MPG (the 03 was one of the better years, less power but less problems).
Hauls a 33' 5th wheel over the Colorado passes with no problems. Average about 13-15 MPG hauling the trailer.
AVOID the 6.0 Ford, they had TONS of problems.
Cummins is a strong motor, great value. The auto tranny can't hold a candle to the Allison in the GM.
How big is the trailer you are pulling? Something to consider is that Diesel in most parts of the country is about 20-25% more in cost that gasoline.
If you buy a diesel you better do a lot of pulling and you better plan on keeping it for a while. If you don't then you are probably better to stick with what you have.I want to upgrade to a diesel for towing our travel trailer. Need real world fuel economy numbers?
I know mine is an older truck but, its an answer. I have a 1996 Ford , 7.3 powerstroke. I was getting 15 mpg alone, 10 with a horse trailer, 7 with a 35' fifth wheel that was 10'6" high,@ 7000 lbs. I removed the catalytic conveter. muffler, added K %26amp; N air system, increased exhaust pipe size, down tube. all @ $1000. I now get 10-11 with the fifth wheel, 12.5 with the horse trailer, but I am running faster with it also. The truck alone, running 70, I am at 17 mpg, 65 gives me 18.5, 60 = 20 mpg, now I run @ 55 seeing about 22mpg. I track my fuel mileage all the time, I know these numbers.I want to upgrade to a diesel for towing our travel trailer. Need real world fuel economy numbers?
ok..i have a 3500 dodge dually 5.9. i get 20 mpg without and 11 with trailer..my trailer is a 40fttravel trailer and i do have the banks upgrade...my trailer is 16000 pounds
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