Prestone rv pink antifreeze

Windshield washer fluid isn't a particularly good option....

That's putting it mildly! Using windshield washer is a horrible option for all the reasons you listed.

Grit dog wrote:
FWIW (doesn't get real cold here) I've been using windshield washer fluid since we moved to WA where there are milder winters, for my camper tanks and boat ballast tanks without issue. And its only like $1.99/gal on sale.

Water lines, hw tank, boat engine all get blown out or drained and dry stored.

Windshield washer fluid isn't a particularly good option, really, and in any event RV antifreeze is about the same price (at least around here). Most winter windshield washer fluid uses methyl alcohol (methanol or wood alcohol) as the antifreezing agent. That is pretty poisonous stuff; a good swig or two could cause blindness. You very definitely do not want to use it on any system that carries fresh water. It's also more chemically reactive than ethyl alcohol (ethanol or grain alcohol) or the other antifreeze agents that get used, though it should generally not be harmful to the typical RV black or gray water system.

It's not a terrible idea to wash your hands after handling the windshield washer fluid, even when just filling up the reservoir in one's vehicle.

Read your owners manual first and understand the equipment on your rig. For those just claiming "blow it out" can get some people in deep XXXX. Some rigs have Aqua hot or similar systems and it states in their instructions to "NOT" just only blow the lines out, or you can ruin the copper heating coils. That will cost you about $8000 in repairs.

RV antifreeze is mandatory in some cases. Our process is blowing out the lines and adding red pop. It gets cold here. We don't drink the tank or campground water anyway.

loggenrock wrote:
I agree - I avoid the ethyl alcohol stuff. Really don't need to add anything else flammable to the rig... I prefer to use the Prestone when I can get it, too.

Now here I go again ruining someones day with facts. Just for your information, both ethylene glycol and propylene glycol ARE FLAMMABLE just like the ethyl alcohol . . . . . . stuff.

The open cup flashpoint for propylene glycol is 225 F. That's known as the temperature that it must be heated in the presence of an ignition source so that the vapor that comes off it will sustain a flame. The autoignition temperature for propylene glycol is 700 F. That's the temperature that, in the presence of oxygen, it will light on fire all by itself. (spontaneously combust) For ethanol, its about 690 F.

If your RV is already on fire, all three, ethanol, ethylene glycol and proplyene glycol have no problem adding to the flames.

Sorry to ruin your day. As an added sidenote, many classes of racing ban alcohol and glycol based coolants because of the fire hazard.

Chum lee

rtreptow7 wrote:
I saw this come up in a west marine ad https://www.westmarine.com/buy/seafit---50-f-marine-rv-water-system-glycol-alcohol-antifreeze-gal--14823330?recordNum=4. I got two
Gallons but when I read the fine print, it doesn’t Protect down to -50 if you use it in pvc piping. Something like only -10. We get a lot colder than that around here so I won’t be using it.

I read the label on the West Marine bottle, "Propylene Glycol"

I've used all types of RV anti-freeze over many years. I started using non-alcohol Prestone RV about 5 years ago, and could actually notice the seal lubrication, when operating the tank valves in the Spring. I make sure to add extra to the tanks, especially the black tank. The Prestone RV will not evaporate from the toilet, or traps, and is non-staining. After running through the system, I drain/blow it out the low points, into a bucket, to also dump in the black tank.

I ordered another case of 6 gals a while back, and it costs way more than the cheap ethanol stuff. RVing is not cheap, and many know how much fun it is to replace those tank valves, with an enclosed/insulated underbelly. Prestone RV works well for me. Others use what works for them, or just blow the lines, add whatever to the traps.

Jerry

Over and over again, every year with this debate.

The antifreeze does not have to stay in the pipes all winter, it's used to displace the water. I winterize, de-winterize the same day. Leave some in the traps only.
Antifreeze can freeze solid but it will not expand, so... -30, -40, -50 are basically all the same.

The RV antifreeze alcohol / no alcohol debate has been going on RV boards since there have been RV boards. Alcohol based antifreeze will not hurt anything, its forum myth.

Most RV owners get winterizing done at RV dealers and RV dealers buy antifreeze in bulk, usually in 55 gallon drums. Do you think they're buying 100% glycol based antifreeze that costs more? They're not, they're buying the cheapest availible.

I saw this come up in a west marine ad https://www.westmarine.com/buy/seafit---50-f-marine-rv-water-system-glycol-alcohol-antifreeze-gal--14823330?recordNum=4. I got two
Gallons but when I read the fine print, it doesn’t Protect down to -50 if you use it in pvc piping. Something like only -10. We get a lot colder than that around here so I won’t be using it.

FWIW (doesn't get real cold here) I've been using windshield washer fluid since we moved to WA where there are milder winters, for my camper tanks and boat ballast tanks without issue. And its only like $1.99/gal on sale.

Water lines, hw tank, boat engine all get blown out or drained and dry stored.