In 1983, Volkswagon had a 42-MPG diesel pickup.
The Chevrolet C-10 6.2L 2WD was 21 MPG on diesel, while the 4.1L gas was only 17.
The C-20 with 6.2L diesel 2WD was 23 MPG.
The GMC Caballero 5.7L diesel got 22 MPG.
The C-15 with 6.2L diesel got 23 MPG.
C-25 with 6.2L got 23 MPG.
Then it showed 4WD with similar mileage, vans, and that was pretty much it. I did not find any GMC truck higher than 23 MPG, and that is the old system. Is there some conversion factor between old and new EPA? Divide by two?
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