For winterizing both potable and non-potable water containing systems and equipment. Suitable applications: recreational vehicle water systems vacation homes travel trailers swimming pool filtration systems etc. The inhibited formula provides unsurpassed rust prevention and metal corrosion protection properties and is safe for all metal and plastic pipes commonly found in water supply systems. 100 Plus Antifreeze ensures that each container is custom blended to exact specifications. This is critical on this product because the consumer typically uses the product to winterize valuable equipment that is difficult or expensive to repair. * Computerized high-pressure blending assures 100% blend accuracy. * 100% USP IG RV grade Propylene Glycol used for all product. * Proprietary corrosion inhibitor blend; proven for over 12 years. * Up to -100F burst protection. * Use in recreational vehicles boats swimming pools cabins and vacation homes.