not sure on maintenance. just picked it up and the bogging down was the first thing i noticed. I'm hopefully going to check the fuel pressure this weekend. also don't know if the other tank works or when the filter was changed. all on my list but thank you everyone for the responses. i...
Just picked up a 96 f-450 w/ Quigley 4x4 conversion. Previous owner says it ran great until something happened with the transmission. On my trip home with it, it seemed to shift through all the gears. All of the sudden after about a mile it would gradually slow down like it was loading up...