Quickleen. Multi-Purpose Cleaner Quickleen® is an advanced cleaner that is guaranteed to clean all interior parts of your vehicle eliminating the most stubborn stains and grime safely and effectively. It safely lifts up dirt and grime without using alkaline, acid, and petroleum based solvents. It is pH neutral and is guaranteed to be safe even on the most delicate car interiors but packs a punch against the toughest stains. Tough on stains, gentle on hands. Cleans upholstery, leather, and vinyl. Non-alkaline, pH neutral. By request/order.