Look at the tire pressure, too. You've got a big, heavy truck on big, floppy tires, making for a lot of rolling resistance. Take as much floppiness out of the tires as you can.
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Originally Posted by sheepdog44
Transmission type Efficiency
Manual neutral engine off.100% @∞MPG <----- Fun Fact.
Manual 1:1 gear ratio .......98%
CVT belt ............................88%
Automatic .........................86%
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