My brand new car has been rust proofed already with another brand, when it came out of the dealership. How does it compare to 3M?
• A lot of car dealers offer this package service to brand new cars. There are brand new cars which only have undercoating on areas visible to the eyes, such as the surface near the wheels. • There are undercoating that are dry on the outside, but soft inside (like wax). This type does not have good abrasion resistance, or good sound deadening properties.