Originally Posted by laj77
Apparently I have water/condensation in the gas tank as when I get higher than 40 mph it loses power. I can overcome some by shifting down. Is a Workhorse 8.1 Fleetwood. Is there a drain plug on the gas tank? If not is siphon a good option? Any rec on additive to overcome? Thanks for your help.
The cheapest and easiest thing to try first is simple-change the fuel filter. If that does not correct the problem, then have a qualified mech. test your fuel pressure at the engine rail. Should be at least 45 psi at idle.
There is no drain in the tank.