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Just got 13.0 MPG

577 Views 6 Replies 7 Participants Last post by  jdr1234
This is the best mileage I have gotten so far in my 01 1500 4x4 5.9. The truck was only getting in the 9 MPG range when I got it during the winter. A complete tune up, bed cover and easy driving got it in the high 11's to 12 MPG. I wonder if the summer formulation for fuel has had a difference in mileage? It seems the mileage went up this month for no reason.

The trucks readout says 13.4 MPG but I calculated 13.0 on the last fillup.
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Nice, I get 5-6, 2-3 in 4wd, that is because I put it to 5500 RPMs on everystoplight.

I get about 13 mpg on every tank... Yea me!!!
I pulled high 12's low 13's with the v10 42's and 5:13 gears
13 inst bad though
I have a 3500 Dually and am getting 15.2 on ave, I though that was bad but maybee I should keep quiet....
That is with a miss and other issues.
In the winter I was getting between 5-7 MPG. After doing a few mods I got it up to 13.11 MPG (highway). That includes taking it to redline a few times too.
I'm not sure how, but I average around 14.0 mpg all the time. I have a 70 mile a day round trip to work, and don't put the "pedal to the metal" too often. When I tow my 6x12 trailer with the John Deere lawn mower on the back, it does drop a little, but not much. I guess I'm one of the lucky ones! My truck is bone stock, with 140,000 miles on the clock, running 10w30 oil (not synthetic), and use 87 octane.
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