> signal light switch won't shut off on its own (common problem with these Fords)
> 14 MPG. with a good tail wind.
>Leaks more oil than ever (rear seal)
>A.I.R. pipe leaks (sounds like exhaust leak)
> Have to be on the ball when driving as truck likes to wander all over the road (Front end is tight though)
Most things wrong with this truck are not its fault, the previous owner didn't maintain it properly. I knew this when I bought it (cheap) but the thing was in very good shape inside and out and looks good to boot, it has all the power options (and air) for that year and it all works (except signal switch) I planed to fix it up (all ready put 4 new Cooper Cobra 255 60's on it) but now that its leaking oil like the Exxon Valdez, (Started after 2 months) I don't feel much like putting more money into it. (Trans has to be pulled to replace seal) Bottom line, truck needs about $2500 put into it to get it where it needs to be, But that's all its worth. I guess I'll just keep dumping oil in for now.
If your mechanically Inclined you could probably replace your rear main seal for about 100$ yes that's 1/25th of what the shop wants. It is a long process though and will probably take most of your day. A friend of mine replaced one on his jeep cherokee and it took about 10 hours, but it did work very well after that.