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Re: Read Something Interesting
Quote:
“now is this with the tailgate up or down?”
“…really humid air due its high density.”
Dave says:
Good grief!
Quote:
“…technically wouldn't dense air give us better mileage?”
Dave says:
That’s gas engine thinking. A diesel operates with excess air so denser air does not help burn the fuel more completely.
Quote:
“This would impact highway MPG more than city.”
Dave says:
Yup. Aero drag HP doesn’t really become much of a factor until over 40 MPH, but it goes up with the cube of speed.
If you look at the performance data on planes, most will make the same speed at a lower power setting at higher altitudes where the air is less dense. Trucks should get good MPG at higher altitudes but higher altitudes generally mean mountains and grades.
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'00 F-350, 4x2, 6 Speed AIC 210,000 miles
3.08:1 Gears
Fuel tank mods: MaroonHarpoon, Pre-Pump,
Evans, 203 degree thermostat, Poor Man's Tymar, 4" Single SS Exhaust, Rugged Air Dam
225-75x16E tires in front 235-85x16Es in back, tires aired up to 100 psi, Lowered 4" in front and 6" in back, "Fastback" bed fairing
21.3 MPG before mods
27.0 MPG tested with mods
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