PJ1 Super cleaner has been used for over 25 years by top mechanics to clean, degrease and prepare just about every surface on a car or motorcycle. PJ1 Super cleaner can be used for pre-assembly of motors, carburetors and brake systems to quickly clean and evaporate leaving no residue or moisture on a prepared surfaces. PJ1 Super cleaner is the 1 mechanics choice. PJ1 Super cleaner uses an ozone safe propellant and is completely recyclable when empty. New environmentally friendlier formula.