Universal 20 oz. Heavy Duty Rubberized Aerosol Undercoating by Permatex®. Whatever car paint project you are about to undertake, you need high-quality, reliable paint to truly get an impeccable finish that will last for years. This superior paint product is engineered with utmost care and unmatched precision to ensure excellent coating ability, deep penetration and bonding, and even coloring and thus make your vehicle look span-new just like it did when it first drove off the showroom floor.