Can I Use Any Prime Guard Antifreeze In Camper AND Pontoon Boat?
Published 10/20/2025
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Question:
Can I use the same Prime Guard antifreeze in both my camper and my pontoon boat?
asked by: Nick
0
Expert Reply:
Absolutely! All three Prime Guard formulas - # PG56ZR, # PG36ZR, and # PG96ZR - are safe for both RV and marine systems. They’re safe for potable water lines, pumps, and even outboard engine water jackets. Just be sure to flush thoroughly in spring, and it's best to stick with one type of base, rather than mixing ethanol-based with propylene glycol-based.
Which antifreeze brands do you normally use to winterize them?
expert reply by:
Andrew N
0
Product Page this Question was Asked From
Prime Guard RV & Marine Antifreeze -50°F Burst Protection - Ethanol-Based - 1 Gal - 6 Jugs
- RV Fresh Water
- Winterize
- Antifreeze
- Prime Guard
more information >
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Steve
10/20/2025
When you say it’s okay for outboard engines, does that mean I can run the Prime Guard straight through the motor, or do I need to drain the water first?