pcf

I've been running E85 lately. Off the line there's not much improvement, it seems like the acceleration at 40+ is a bit better. Mileage has 9 unloaded and as low as 6 while towing. Cost wise it's been a wash. The even more frequent visits to the pump are the worse part of E85.

3500HD DRW 10-12mpg with a pretty laid back driving style. That's 60/40 highway to city, 65mph tops but no consistent highway speeds due to traffic. Drove to El Paso to pick up a trailer and averaged 15mpg on the way out and 8 on the way back with a 10k trailer.

In the Ike Gauntlet videos manual mode isn't used in the transmissions, that can highlight some serious programming problems but doesn't necessarily show what a truck is capable of doing. For the manufacturer it's a balancing act, programming a transmission to do well in an extreme uphill tow scenario, would make for a miserable driving experience on flat ground or moderate rolling hills. In the 2500 gasser video the truck was maxed out, overall it was an impressive run. It's moving a lot of weight at high altitude, it's maintaining enough speed that its not a rolling hazard or at risk of getting in a wreck with an 18 wheeler.