GM 6.6 & 3:73
Looking for actual input, experience not opinions without experience. Anyone that has a GM, 6.6 gas with 373 gears, towing I would like to know your experience with towing power, fuel mileage and ove...
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My 05 duramax ,3:73,towing a 28’ TT about 6000lbs, mostly from Ohio to eastern shore of Maryland via Interstate 68 averaged about 12mpg. But I don’t get in any hurry going anywhere(speed limit or less)
