Is There A Reason To Go With Glycerin-Free Antifreeze Instead Of Ethanol-Based? RV Boat Winterizing
Published 10/20/2025
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Question:
Is there any reason I’d want the glycerin-free antifreeze instead of the ethanol-based one?
asked by: Skip
0
Expert Reply:
Great question, Skip. The # PG36ZR skips ethanol completely, which makes it gentler on seals and fittings over time. Some owners prefer it because it’s non-flammable and doesn’t have much of a scent at all. The ethanol-based # PG56ZR is more budget-friendly and works great for most rigs in more southern climates - especially if you flush each spring.
Are you winterizing an RV or a boat?
expert reply by:
Andrew N
0
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
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