SRW vs DRW MPG
I had a 99 V10 3.73, Dually LB CC 2wd...I got about 9.5 empty and 7.5 towing. How much is the dually MPG penalty? I mean, if my truck wasn't a dually, what would my MPG have been? Would it have...
Forum Discussion
lenr wrote:
6 wheels on the ground compared to 4 wheels on the ground is not twice as much braking surface—1.5 times as much. Extra weight from heavier dually suspension reduces mileage. In Fords a dually always comes with higher numeric rear ratio making engine spin faster causing lower mileage. GM had a white paper out a few years ago saying diesels are more susceptible to reduced mileage from high engine RPMs than are gas engines. Luckily the low RPM torque peak in diesels lets you gear them for slow RPMs if you got a big enough engine. My son went from 7.3 regular cab long bed 16 mpg to 7.3 crew cab long bed dually 12 mpg. Your results may vary.
Well I assumed we all knew both trucks would have front wheels which is why I mentioned 2 wheel vs 4 wheels being twice as much:S
In your son case your just not comparing SRW vs. DRW. You are also comparing regular cab to crew cab.
If you keep chassis,engine size and all other factors equal and only compare SRW vs DRW MPG difference is negligible.
