TRUEGARD Marine RV - 100 Antifreeze: 55 Gallon Drum

Yes. The formula uses 100% USP IG RV grade Propylene Glycol, which meets a high-purity, food-safe standard. This makes it suitable for winterizing both potable and non-potable water-containing systems, such as RV water lines and cabin plumbing, where contact with drinking water is possible.

Burst protection refers to the temperature at which pipes or vessels would rupture from ice expansion - this is typically lower than the initial freeze point. The -100°F burst protection rating means the fluid provides a substantial safety margin well below most winter storage conditions, helping prevent costly damage to plumbing and equipment.

The inhibited formula is safe for all metal and plastic pipes commonly found in water supply systems. It can be used with confidence in RV plumbing, boat water systems, swimming pool filtration lines, and vacation home or cabin piping without risk of material degradation.

USP (United States Pharmacopeia) grade Propylene Glycol meets strict purity requirements, making it appropriate for systems that may come into contact with drinking water. This is a key distinction from ethylene glycol-based antifreeze products, which are toxic and unsuitable for potable water applications.

The corrosion inhibitor blend provides rust prevention and metal corrosion protection for the pipes, fittings, and internal components of water supply systems. Truegard states this blend has been proven effective for over 12 years, offering reliable protection for equipment that can be difficult or costly to repair after winter storage.

A 55-gallon drum is ideal for high-volume users such as marinas, RV parks, fleet service facilities, or property managers winterizing multiple units or large systems. Buying in drum quantity reduces per-unit cost and minimizes reorder frequency compared to smaller consumer-sized containers.