30 MPG out of a dually??
Sounds crazy but hear us out.
A magazine actually pulled this off years ago with a fuel economy test on a dually.
Yeah they taped up the grill, killed the AC,
taped the wheels and basically did everything they could,
to cheat the air but they got there.
Then one of our guys ran a similar test with a 12 valve and hit 30 MPG too.
At that point it stops being a fluke and starts being proof,
that these old Cummins platforms are seriously underrated for efficiency.
Oh and the truck he was running?
Bought it used and it already had some of our parts on it.
Three piece manifold, boots, the whole deal.
Whoever owned it before had good taste.
The 12 valve community stays winning.
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