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Old 01-01-2010, 05:50 PM
topsites topsites is offline
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Join Date: Mar 2005
Location: Richmond Virginia
Posts: 21,659
Originally Posted by dishboy View Post
My 04 f150 Heritage shortbed , with 4.2 manual consistently got 16 mpg hauling a 6X10 , 36 walk , two 21"s , two trimmers, two blowers a edger and hand tools and tool boxes. You have a fuel issue or a lead foot.
Although I will agree that driving technique can account for up to 20% of a vehicle's fuel mileage, sometimes more.
Beyond that a religious maintenance program also helps, change the oil and filter, the air filter, the spark plugs, the list goes on...
Just one underinflated tire can cost 5-10% in fuel economy, so keeping up with this as best as one can does make a difference.

But beyond that with some outfits it's all in the engine and the weight, my '95 3/4 ton club cab with a 5.9L V8 and a 6x12 trailer
weighs 6 thousand pounds empty, I can almost see 12mpg on a very good day, under 10 when it's not so good.
There ain't NOTHING I can do about it, not even "driving with load" to a fault helps but so much.

My '86 D-250 used to get 14mpg all the time, it used to drive me nuts.

I mean I have gone so far as to study the aerodynamics of the truck to figure out what modifications I can make
I kid you not, I spent WEEKS fooling with that

In the end I just had to face the music, some trucks don't do as well as others.

Last edited by topsites; 01-01-2010 at 05:59 PM.
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