While the coating you had put on your car was good, it's little more than a decent wax that lasts little more than 6 months. The extra money you paid for was the warrantee that you got with the product incase your clear coat were to become defected. All vehicles benefit from the wax applied to your car in the car wash or in our detail shop. There is no chance of damage, voiding your vehicleâ€s warranty, or negatively altering your vehicleâ€s finish. The wax protects your finish, keeps your car cleaner for longer, and visibly enhances its shine.