See what our Experts say about this Prime Guard RV Fresh Water

• Which Prime Guard RV & Marine Antifreeze Is Best For Jayco Eagle Fifth Wheel In Michigan Winter?
  Brian, for Michigan winters you’re right at the edge of what the ethanol-based Prime Guard # PG56ZR is built for. It gives you –50°F burst protection, which is plenty for typical storage, but if you see long subzero stretches, I’d bump up to the –100°F # PG96ZR. The nice thing is both formulas flush easily in the spring, so you can swap without any hassle. I also would strongly recommend the -100F option since it is alcohol and glycerin free, meaning the seals will stay protected longer. How...
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• Can I Use Any Prime Guard Antifreeze In Camper AND Pontoon Boat?
  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?
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• Do I Still Need To Winterize Travel Trailer When Sitting During Winter In Florida?
  Karen, probably not unless temps dip below freezing for extended stretches. But a light flush with the –50°F # PG56ZR gives inexpensive protection and keeps your lines from freezing if your rig sits unused. If you also want to keep your seals and fittings conditioned, the glycerin-free # PG36ZR is the better choice. It is alcohol-free and does a nicer job protecting rubber components during storage, so I recommend using this in a light mixture. If you decide not to go this route, at...
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• Is Pink Prime Guard Antifreeze Safe To Leave In The Lines All Winter Without Draining Til Spring?
  Yes, Scott, that’s exactly what it’s made for. All three Prime Guard formulas are non-toxic and won’t damage plumbing if left in place for the off-season. Just remember to flush with fresh water before first use. That said, I strongly recommend going with the glycerin-free options like -50F # PG36ZR and -100F # PG96ZR since they actually help lubricate seals, making them last longer than using budget-friendly ethanol-based antifreeze like -50F # PG56ZR. Do you sanitize with bleach or...
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• What Does Alcohol Free Or Ethanol Based Antifreeze Mean When Winterizing Travel Trailer RV?
  You’ve got it right. The Prime Guard RV & Marine Antifreeze -50°F Burst Protection 6 pack # PG56ZR uses ethanol as part of its base fluid, while the Prime Guard Glycerin Free RV & Marine Antifreeze -50°F Burst Protection 6 pack # PG36ZR eliminates alcohol entirely. The glycerin-free formula is popular with folks who prefer a totally non-flammable, low-odor option. If you’ve ever noticed a slight alcohol smell after de-winterizing, switching to the glycerin-free version will solve that....
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• Will Prime Guard Antifreeze Leave Taste Or Scent Behind In Water Lines After Flushing In Spring?
  After one good flush, any trace taste should disappear, Gerald. The # PG36ZR and # PG96ZR are especially clean-rinsing since they’re alcohol-free. The ethanol-based # PG56ZR might leave a light scent at first, but a vinegar rinse or Camco spring cleaner # CAM40207 clears it right up. Do you usually sanitize before your first trip out each year?
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• Is There A Reason To Go With Glycerin-Free Antifreeze Instead Of Ethanol-Based? RV Boat Winterizing
  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?
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• How Many Gallons Of Antifreeze Does It Take To Winterize 35' Class A Motorhome?
  Doug, typically about 2–3 gallons will do the job on a travel trailer, but on a class A you are better off with about 4-5 gallons. Since Prime Guard comes in a six-jug case, you’ll have plenty. If you’re in an area that dips below zero, use the premium -100°F # PG96ZR otherwise, the –50°F # PG36ZR or # PG56ZR will do great. How’s your rig stored - covered lot or open pad?
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• Antifreeze To Winterize 2021 Keystone Cougar Parked In Northern Illinois
  Mark, for Illinois you’re right on the border between the –50°F and –100°F options. The standard # PG56ZR ethanol-based blend will usually handle normal Midwest winters just fine, but if your rig sits in unheated storage for weeks of deep freeze, step up to the premium # PG96ZR for peace of mind. It costs a little more but adds serious protection against those random cold snaps. Do you store indoors or outside over winter?
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