My '93 Ranger, bought off the lot in '93, recently had a spring mount rust out and fail behind the right rear wheel. The exhaust system is still original and in good shape. Is this common, and should there have been some kind of rustproofing from the factory that would've kept the frame in better shape for a few more years? At least outlive the exhaust system? I take fairly good care of the truck and don't let salt and mud build up anywhere I can spray out at the carwash. Anyone else have a similar situation?
LB