Going to Memphis TN from Central Florida in Oct 2020 my buddy pulling his open trailer vette with e450 class c v-10 and me in e450 v-10 based vegas pulling my car on open trailer. Pretty close same weight overall. Every gas stop were within tenths of gallons to fill. Running 65 to 68 MPH swapping lead
Would have thought class C overhead air brake drag could hurt MPG. If it did, was minimal.
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