Won't streak or discolor paint, glass, mirrors, fiberglass, boats, rvs, tractors, etc. Cleans and weatherproofs leathers. The gallon is the most economical, There are a little over 5/ 24 oz sprays in this gallon jug. That makes it over an $80.00 value. Thunderbolt s the "Ultimate" waterless detailing polish. It is designed to clean, polish and protect most non-porous surfaces. Excellent auto detailer as well as on boats, RVs and motorcycles. Our chemists specially formulated a blend of components designed to be used as a versatile cleaner/polisher that contains no alcohol or ammonia and is safe on most surfaces.