TEMCO AP10 Blend Industrial Auto Parts Cleaner Detergent Degreaser Concentrate (10 Pounds) Not recommended for hand wash solvent sinks, metal safe and highly concentrated, 16 ounce cup per 20 gallons of water Save time and money, TEMCO's quick clean formula allows you to wash industrial and auto parts faster and better Lasts 5 times longer than competing brands, lasting approximately 3 to 4 months Made in the USA , great for engine blocks and transmission parts formulated for TEMCO and other brand industrial heated cabinet style parts washers.