MMF Spec - standard opening, strong specs, big
block high torque moderate horsepower - outstanding on fuel
This is my best recent Custom Sleeper Fuel Efficiency
effort - 7.2 MPG the first trip out (80,000 lbs.), then 6.2 MPG (108,000
lbs.)
...the high so far is 9.3 MPG (very light load &
bob tailing) -
@ 3 months, now stabilizing into the 7's or 8's for most every
load.
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