Posted by OliverGuy on May 25, 2009 at 19:33:57 from (75.149.65.181):
In Reply to: duramax mileage? posted by Brad in WI on May 25, 2009 at 19:00:36:
Depends on what year. "04 and early is a 5 speed and "05 and later is a 6. Wish my "04 had that next gear. It"s humming down the road past 60 and uses way too much fuel. Those motors only barely need to be turning over to run down the interstate. Rear end ratio obviously matters also. We pull trailers every day and I would keep buying 8.1"s if they made them. Everything I have gets 8 mpg while pulling--8.1"s, 6.0"s, 350 Vortecs. But the 8.1"s pull 10,000 lbs. or more with ease. But if you"re not pulling all the time, the 8.1 gets really thirsty. Only GM"s here also.
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Today's Featured Article - It Can't Be Done! - A Tractor Story - by Neil Campbell. I'll never forget the time back when I was a boy baling hay on our Farm in Big Rapid, Michigan. The most memorable event that took place was a trip up the steepest incline on the farm pulling an old New-Idea baler with a pony-motor for power and a haywagon. I had just talked my Dad into buying an old John Deere B with 6-speeds ahead and I was real proud of it, except it was a little smaller than the Case tractor that we normally
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