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Old 10-02-2014, 08:18 AM   #1
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Antifreeze storage

My trailer is at a seasonal park in Michigan. Yesterday I winterized it. This is the first time I did the water lines myself, so I wasn't sure how much rv antifreeze I'd need. I had 4 gallons. I used 2, and set the other 2 in an outside compartment. Will these be good to use next year? (Obviously rv antifreeze doesn't freeze. Don't know if this is true, but I read that it can turn to slush.)

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Old 10-02-2014, 08:47 AM   #2
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Straight engine A/F can gel at extreme ( -35f and below ) best protection, for engine is 60/40, or according to the chart on the container.
I've never heard that being exposed to the gelling effects the performance of the A/F so , I can't imagine there would be an issue with the RV, plumbing A/F.
Can't remember reading " Avoid storing in extreme cold " on any A/F container.

EDIT: Even if the A/F does gel , any expansion wouldn't damage the container.

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Old 10-03-2014, 12:38 PM   #3
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RV anti-freeze doesn't "spoil" any more than water would. It's a stable product, propylene glycol, that doesn't change chemically just sitting in a closed container, and is also used as a food additive. If it's not contaminated, it's good pretty much forever. When it's on sale I stock up, and I'm using stuff that is years old. One spring WalMart was clearing out their RV anti-freeze for $1.00 a gallon. I bought a bunch.
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Old 10-05-2014, 02:34 AM   #4
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I don't use any, I blow the lines out with air opening all taps and closing the closest ones to the city water hook up that go dry first and working way to the farthest which is outside shower for me and drain tank and hot water heater and 2 low spot drains and have no issues and no antifreeze contamination problems

I'm in ND and it was negative 40 for about 3 months last winter but I was in Nevada and California for 4 months, lol! Plenty cold enough before I left though, no problems if you blow them out right.
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