Anyone towing with a 2017 or newer F-450

[Diesel Dave 04]

So I upgraded from my 08 F350 to a 17 F450 way over kill for a15,600 trailer the GCVR is over 42,000. But I also use it to haul a flat bed. I would like to see 10 mpg towing but I been avg. 9.8 and that is after installing a banks derringer before I was at 7.5-8 mph just wondering if anyone else is running one and is it also what you guys avg.

[WVcampers]

Towing with my 2019 F350 average 9-10 mpg. It has the 3:55 rear and is SRW. Mostly towing in the hills of WV and run 70-75MPH when in the Interstates.

[Diesel Dave 04]

Towing with my 2019 F350 average 9-10 mpg. It has the 3:55 rear and is SRW. Mostly towing in the hills of WV and run 70-75MPH when in the Interstates.

I most times only run 68/70 mph I’m headed to Myrtle beach next week I will see how it does on that trip