RV and Marine Antifreeze from FVP is now made with renewable resources. Designed for use with recreational vehicles, boats, spas, pools, and vacation homes. Formulated for -50°F burst protection. Convenient, ready-to-use solution. DOW® USP propylene glycol. DOW® USP corrosion inhibitors. Proprietary plant-derived additive. Improves user safety when compared to ethylene glycol-based products. Safe for incidental contact with people, pets, and wildlife. Readily biodegradable and non-toxic to aquatic life.