Workhorse 8.1 liter poor fuel mileage
I have a 2005 Fleetwood Southwind 37c with the 8100 Vortec V8 with an Allison 5 speed transmission with 28000 miles that gets very poor gas mileage, about 6 mpg towing my boat or pickup and 7 mpg empt...
Forum Discussion
Lmcneil wrote:
The terrain is both mountains and flatlands, but it seems there are always hills wherever you go. It got the same mileage stock before I changed anything, although I don't remember if the tailpipe had the black soot in it. I'm thinking of taking it to Banks and have them put it on the dyno and see what they say.
I assume that you're not burning oil and this black is in fact just soot.
At any rate, it doesn't sound like there's anything wrong with the rigs fuel consumption, but you might slow down for an extra mpg and save a lot of wear and tear, as well.
