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View Full Version : Duramax Mileage Steadily Increasing!



Bobcat698
10-01-2002, 19:00
Well, I have fueled my Duramax up 4 times so far & have 800 miles on it.
I didn't refuel because the tank was low, I just usually top it off when I head up North.

Anyway the First Tank MPG could not be accurately calculated because I don't think the dealer had it "topped off".

But the second tank I got 14.7 & the third tank I got about the same, (I put on the topper as well)some of the travel was while pulling about 5,000lbs:
Which it towed like a dream BTW!

This last tank I just topped it off & I had about 300 pounds of equipment in the box WITH the topper on. I got 15.7MPG, it just keeps getting better as it gets more broken in it seems.
I will change the oil pretty quick here also as well.

This truck is da BOMB!

Garrett

mark45678
10-01-2002, 20:20
I just came back from NC on a 2800 mile 3 day weekend going down got a record HIGH of 19.8 mph at 75~80 mph and pulling a enclosed 20' trailer 102 wide and 8' tall that tipped the scale at 5k got 11.7 as a low and a high of 13 @75 mph..... these truck love to pull! try that with a gas job.... :eek: