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Peterbilt 388 MPG

8 Peterbilt 388s have provided 92 thousand miles of real world fuel economy & MPG data.
Click here to view all the Peterbilt 388s currently participating in our fuel tracking program.

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Tips

Know your shift points

I have 2 w-body GM cars 1 with 3400 and 1 3800 n/a. So here ... ...

by dickawg

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