I do not drive very much (about 5k/year on my 911, around 2.5k on everything else), including in the winter, but I do some. This car was in GA 1993-98, MI 98-08, my garage 08-16 and now in IL. There is no more than surface corrosion anywhere but it does have the look underneath you'd expect of a car driven in the midwest - surface rust under flaking paint on some suspension components, surface corrosion on hardware, etc. (except for the right front suspension, which has been protected by a slow power steering fluid leak). I would like to have the undercarriage coated to protect it from further corrosion. Product
TBD - maybe Fluid Film, maybe something else. (I'll probably consult the recent thread on this topic.) Do I need to do anything to the car other than power wash the underside to make sure it is clean? Or am I better off not coating it at this age?