Prime Guard -50-Degree Ethylene Glycol RV Antifreeze provides reliable freeze protection for RV plumbing systems in extremely cold temperatures, helping protect pipes and water lines from freezing during winter storage or use. Formulated with ethylene glycol, this antifreeze is designed to provide dependable cold-weather protection down to -50degF, making it a practical choice for preparing recreational vehicles for harsh winter conditions. | Prime Guard -50-Degree Ethylene Glycol RV Antifreeze | Size 2.5 gal