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Prestone Waterline RV/Marine Antifreeze 1 gal

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

Ready-to-use waterline antifreeze that protects RV and marine plumbing from winter freeze damage - no mixing required.
Prestone MPN AF225
Sold Locally Only

This product isn’t sold on our website — see your local hardware store.

In-Store Exclusive

This one's worth the trip to the store.

This Prestone item is one you'll find in stores rather than online — and that's often the better way to buy. In store you get the genuine article, full manufacturer warranty, and real advice from someone who's actually handled it — no counterfeits, no gray-market resellers.

  • Authorized dealer network · Full manufacturer warranty & support
  • Guaranteed authentic · No counterfeits, no gray-market resellers
  • The brands set these standards · Be wary of sellers who don't follow them
Why isn't this online? The whole story →

About Product Overview

Prestone RV/Marine Antifreeze protects the plumbing systems in RVs and boats when temperatures drop, keeping water lines from cracking over the winter. It's a ready-to-use formula, so there's no mixing or diluting before you run it through your lines.

Built with OET (Organic Extended Technology) formula, this waterline antifreeze is a straightforward, no-fuss way to winterize before storage season.

  • Brand: Prestone, sub-brand Waterline
  • Ready-to-use, non-concentrated formula
  • OET (Organic Extended Technology) formula
  • 1 gallon container
  • Made in the USA

The Details Specifications

Brand Prestone
Model / MPN AF225
UPC 797496881663
Weight 9 lbs
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
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