Bought used car from dealership & had it rustproofed by Pro-Tech Seal. Per the guarantee, every 2 yrs I had the car inspected by the dealer and the inspection report was forwarded by them to Pro-Tech Seal.Now, the seams at the bottom of the front doors & rocker panel are rusting.Pro-Tech Seal claims that these areas of the car are not covered by the guarantee although the “terms and conditions” of my contract do not exclude these areas. They will use any excuse to not pay. Waste of $$$