What fuel mileage do semis typically get without a load?

Captain Mudsocks?? Ooook, typically the "fuel" mileage, not gas mileage for a S60 Detroit is about 7-8 mpg, loaded or empty. I got 8 empty once, I figure Cat is about the same, why do you ask, get paid for running empty all the time? What a deal!! How did you ever swing that?

 

Must have landed a lucrative contract hauling sail boat fuel.

 

actually could be motorcycle doors....after all, I've never seen a diesel cycle...now that I think about it....a natural gas motorcycle probably not far off the drawing board....or electric

 

Sail boat fuel, Corvair radiators, dispatcher brains, take your pick,,,

 

In my old truck with a C13 it was not uncommon to hit upper 8s and even higher with a good tail wind. It did just under 12 bobtail from Illinois to Ohio with 20+ mph tail winds. The C15 I run now can do upper 7s when empty. I pull a flatbed. And numbers are from a scan gauge that closely matched paper numbers.

 

I used to get about 7.5 average with my old classic/s60 (pre egr) and empty reefer

 

2001 T2000 N14 - 7.1 mpg pulling flat.

1995 379 S60 - 6.25 mpg pulling flat.

That’s lifetime average.

Both will get 8.5 plus empty, 9 or so running direct at 60 mph.

 

Not quite the engine you're interested in, but my flatbed spec T660 with an ISX got 8-9 dragging an empty skateboard and about .5-1 MPG less with an empty van.