Big Z is a liquid, heavy-duty, alkaline cleaner for painted trucks, panel trailers, fiberglass and unpainted aluminum. It is formulated from a concentrated blend of heavy-duty detergents, emulsifiers, alkaline builders, water softeners and inhibitors. It contains only biodegradable surfactants and is phosphate free. It is ideal for truck leasing companies and truck washes. It can be used in an automatic truck wash or applied via a high-pressure washer. It brightens aluminum without the use of toxic fluoride compounds and will not etch or frost glass. The cleaner is thin and dark brown and has essentially no odor.