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Discussion Starter · #1 ·
A bit of a mystery. With all things being as close as possible to the same, (driving habits, type of gas, highway VS local etc.) my gas mileage on my new S10 PU truck (1300 miles, all stock, 4.3L) has steadily declined from a new 20.6 MPG to 16 MPG. I get the feeling that the onboard computer is learning or changing the efficiency somehow. Anyone have a more logical explanation?

:werd:
 
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