Quote:
Originally Posted by chapo
funny how Joe is the only one with a 30 mpg cummins. you would think Dodge would have the market cornered with this info.
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Joe is not the only one who has seen 27 mpg on the highway with a Cummins. He is the only one here with that kind of mileage. After all, my truck is box stock with the exception of the Edge unit and a Raptor lift pump. NO other mods and a two wheel vehicle with 6 speed manual gearbox. Four wheel drive and automatic transmissions both get less mileage.
From your link:
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I just spoke to Jerry this afternoon. The 42 mpg truck was an 03 Dodge with the Cummins 5.9L common rail. Modifications included performance exhaust, propane injection, turbo mod, electronic controls and a wee bit of hydrogen injection. The rig still had a stock body, stock injectors and was (and still is) street legal. The 42 mpg was done on a track, so there was no "going downhill the whole time?".
All the energy used, including the propane, was accounted for in calculating the 42 mpg rating. Jerry has sold that truck and the new owner gets between 800-1000 miles on the stock fuel tank (35 gal) along with the 8 gallon propane tank, that's between 23.5 and 29.4 mpg in normal (real world) street driving conditions.
Currently Jerry is driving a 2004 1/2 Chevy Duramax with the LLY motor. He has of course tweeked it and is averaging 32 miles per gallon in general use. I was wrong in my first post. Jerry is located in the north Phoenix AZ area. The phone number was correct.
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Hope you guys like the taste of crow, feathers and all....