Gas milage for a diesel / gas engine

etcssw wrote:
Here's my request, I need people that own fifth wheel trailers to let me know about their gas mileage. I presently have a toyota tundra when I'm not towing anything I get about 20 miles to the gallon but when I'm towing my TT the gas mileage drops to 9 miles to the gallon. NOW WE ALL KNOW that truck sales men will tell you that their truck gets a million miles to the gallon which we know isn't true. So if you have a fifth wheel trailer please tell me which truck you tow with and is it gas or diesel and what your gas mileage is. This will help my wife and I to pick the correct truck and fifth wheel to buy.

Truck in my sig gets 9-11 mpg when towing, depending on terrain and wind (have seen 12+ on the flat with a nice tailwind). Best mileage I've ever seen when empty was nearly 23 mpg running 70-75 mph last October, going from PHX to Cortez, CO. Funny thing is, the vast majority of trucks that tow, get right around 9-11 mpg when towing. Doesn't seem to matter if it's your Tundra, my D'max or that other guy's Kenworth pulling 40,000 lbs. Yeah, there are fliers on both ends, but it often has to do with a specific load or driving style. The guys you see pulling a 40' TH with a 2500 with its nose pointing towards Polaris at 75-80 mph, you can bet are getting 5-6 mpg and damn the torpedoes.

Lyle