This offer is for 6 X 1 Gallon Jugs. More Information Waterline/RV Antifreeze; 1 Gallon; -100° No Burst; Potable Water Systems Challenge freeze-up in all types of potable water supply systems. Features & Benefits: Ready to use Fights rust and metal corrosion in boats, trailers, RVs, vacation homes, and swimming pool filtration and heating systems. Non-staining. Will not harm plastics (except acetate). Prediluted formula contains 50% distilled or deionized water, mixed with 50% full-strength concentrate, making it ready-to-use straight from the bottle. Concentrated formula contains 100% full-strength concentrate, and must be mixed with the recommended ratio and type of water (typically distilled or deionized) before use. Coolant Chemistries Topping off or mixing coolant chemistries can reduce the inhibitor levels (corrosion protection) of the Coolant / Antifreeze and cause reactions that form sludge and clog cooling system components.