jmc63

Should i be worried about this? Looking to buy this f-350 6.0 (75000miles), its really clean but underneath it looks a little sketchy.

1997F150XLT

it's not too bad the frame rails look like they are in good shape. Now the bed support channel looks bad. I would get in there and hit the rusty stuff see how much falls off or poke at it good with a punch and check for any softness. My bed supports looked the same so I just sprayed them good with Purple Power and let it set real good. Then I scrubbed the rust with a brass brush and brillo pads. Got in there with a power washer for a good long time. Blow everything dry with compressed air. (Make sure there isn't a line oilier used.) Then I used a heavy duty rubberized under coating on it. I spray from the bed rail out to the pinch seam.
Hope ya decide to get it. It really doesn't look too bad under there.