Optimum's Premium Car Wash is a gentle car wash designed to remove the toughest dirt and road grime while extending the life of your vehicles protective finish. OPT Premium car wash will not remove or strip your wax or sealant finish ensuring that your vehicle continues to be protected from harmful UV rays and the natural elements your vehicle faces. Optimum Premium Car Wash is a highly concentrated and can be mixed .5 oz for every 1 gallon of water.