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reply to post by lostbook
MPG will NOT improve at speeds over 40mph.
The weight of the vehicle does NOT MATTER nearly as much as DRAG..
try throwing a wiffle ball, and a real baseball. which will go further?
the heavier one of course! why? weight vs. wind drag.
the gearing and engine RPM play a MUCH larger role in mpg than vehicle weight,
JUST ANOTHER SHEEPLE URBAN LEGEND -- less weight = better mpg.
Plus, as an example. I have an old 1988 modified lifted suburban, heavy duty axles, brakes, etc. and a 4.88 ring and pinion.. weighs 6100 lbs empty on the truck scales. with a 5.7L motor.
It EASILY outweights the newer suburbans with their plastic body parts, interior, etc.. Even though they:
1. weigh less
2. have "improved aerodynamics"
3. not lifted as high as mine
4. newer tech cpmputerized engines, etc..
Mine can smoke them all at ANY speed, and gets 12-14mpg towing a cargo trailer at 60mph.. THAT IS DIESEL territory!
Oh, and the newer suburbans get 8-10 mpg towing the SAME trailer..
I drive an F250 diesel, I kind of like the fact that it's steel. I feel a bit safer in it and can't imagine driving in something that is as easy to crush as say a Coke can, or beer can. I would have to say no thanks! I feel better in my tank. Unless Ford has something else up their sleeve that makes their aluminum extra tricky and strong, maybe it's some top secret new kind of metal. Who knows?