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Protects water systems and engines from freeze damage down to -50°F during winter storage. Designed for winterizing boats, RVs, and seasonal vehicles with copper, brass, or plastic plumbing.
Used to winterize boat, RV, and other seasonal water systems before freezing temperatures arrive. It protects plumbing and engine storage systems from freeze damage during off-season storage, especially where copper, brass, and plastic components are present.
Community ratings and field notes for Winter-Grade -50°F Propylene Glycol RV & Marine Antifreeze.
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