Seafit -50 degreeF Marine & RV Water System Glycol/Alcohol Antifreeze, Gallon Ensure your boat or RV is winter-ready with Seafit -50 degreeF Marine & RV Water System Glycol/Alcohol Antifreeze. Designed for economical and effective winterization, this antifreeze is ideal for protecting potable water systems, ballast tanks, and sanitation systems during the off-season. Why Choose Seafit -50 degreeF Antifreeze for Your Marine and RV Winterization? Reliable Cold Weather Protection: Seafit provides exceptional burst protection for copper pipes down to -50 degreeF (-46 degreeC), making it perfect for winterizing systems in both boats and RVs in mild to moderately cold climates. Easy to Use: This antifreeze is ready to use straight from the gallon with no need for dilution, simplifying your winterization process. Safe for Potable Water Systems: Formulated to be safe for use in drinking water systems, Seafit ensures your potable water remains uncontaminated while protecting against freeze damage. Bright Red Color Indicator: The vivid red color makes it easy to see when the antifreeze has circulated through all water and sanitation system lines, and it helps with system flushing during spring maintenance. Economical Solution: Seafit offers an affordable option for winterizing water systems, ballast tanks, and sanitation systems without compromising on quality. Temperature Range: Provides freeze protection within a range of +6 degreeF (-14 degreeC) to +10 degreeF (-12 degreeC). For more extreme cold climates, consider using non-toxic Pure Oceans antifreeze with a -60 degreeF or -100 degreeF rating for enhanced protection. Not for Engines: Note that this antifreeze is not suitable for use in engines.