When your prime motive is to prevent rust from damaging the metal parts of your vehicle, then the POR-15 Rust Preventive Coating is a good paint to have in your corner. Coming in a one-quart can, this paint goes on easily with a paintbrush and dries into a rock-hard, permanent coat with only two or three thin coats. It can also be sprayed on and it won’t peel, crack, or shrink under standard conditions.
With proper handling, it cures into a neat, non-porous coating without leaving a residue. You can use it on your vehicle’s suspension, chassis, doors, engine, trunk areas, and other rusted metal parts. However, this paint is recommended for professional use only. You may not get the best results if this is your first time handling protective paint.