Does Prime Guard Antifreeze Lubricate And Protect Seals And Fittings On RV or Boat?
Published 10/20/2025
Products Featured in This Question
Question:
Does the Prime Guard antifreeze lubricate seals and fittings too, or just prevent freezing?
asked by: Kurk
Expert Reply:
It actually does both, Kurk. The non-flammable formulas like Prime Guard Glycerin Free RV Antifreeze -50F # PG36ZR and -100F # PG96ZR help keep seals conditioned while preventing corrosion in fittings. That’s one reason they’re popular with Rv and boat owners who store for months unused in the winter.
The standard ethanol based antifreezes are typically fine, but they don't lubricate seals and fittings like the two options above do.
Have you noticed any stiffness or cracking in your faucets or pump seals before?
Product Page this Question was Asked From
Prime Guard Glycerin Free RV & Marine Antifreeze -50°F Burst Protection - 1 Gal - 6 Jugs
- RV Fresh Water
- Winterize
- Antifreeze
- Prime Guard
more information >
Continue Researching
- Shop: Prime Guard Glycerin Free RV & Marine Antifreeze -50°F Burst Protection - 1 Gal - 6 Jugs
- Q&A: What Does Alcohol Free Or Ethanol Based Antifreeze Mean When Winterizing Travel Trailer RV?
- Q&A: Which Prime Guard RV & Marine Antifreeze Is Best For Jayco Eagle Fifth Wheel In Michigan Winter?
- Q&A: Wiring Guide For The Furrion RV Side Camera W/ Night Vision
- Q&A: Gauge Wire for Wiring Up Thermostat of Furrion Chill RV AC Unit
- Q&A: Looking For Replacement 7-Way Plug With Double Prong Design
- Q&A: What Material Are etrailer RV Storage Covers Made Of
- Q&A: Is Pink Prime Guard Antifreeze Safe To Leave In The Lines All Winter Without Draining Til Spring?
- Article: What is the Best Trailer or RV Storage Cover
- Article: How to Winterize & De-Winterize Your RV (Simple Guide)
- Article: Trailer Maintenance Schedule
- Article: The Best Trailer Tongue Locks for Preventing Trailer Theft
Lisa
10/20/2025
I’ve been using the ethanol-based Prime Guard #PG56ZR for a couple years and haven’t noticed any issues yet. Is it still worth switching to the glycerin-free one just for the seal conditioning?