Winterization
I "winterized" our Pleasure Way Pursuit yesterday. I drained the water tank down to about 8 gal. and poured 3 gal. of RV anti freeze into the tank. Then I ran all the sink faucets both hot and cold, ...
Forum Discussion
According to this Material Safety Data Sheet, RV antifreeze consists of 30% propylene glycol and 70% water. This antifreeze works by causing the water to freeze out of the solution as small crystals of "slush", rather than the hard solid freeze that occurs in plain water.
By diluting your 3 gallons of antifreeze with 8 gallons of water, you reduced the propylene glycol concentration from 30% to about 8%. Will that mixture freeze solid during a prolonged cold period of 25 degrees? Maybe, maybe not.
However, you compounded the initial dilution by not draining the water heater. The additional water in the heater further diluted the propylene glycol, perhaps to only a few %. Your highest risk of freeze damage will therefore be in the hot water piping.
It takes a number of hours to freeze water at 25 degrees, so you may get away with this experiment if you get a short period of freezing with above freezing temperatures during the day.
Please let us know how it works out.
By diluting your 3 gallons of antifreeze with 8 gallons of water, you reduced the propylene glycol concentration from 30% to about 8%. Will that mixture freeze solid during a prolonged cold period of 25 degrees? Maybe, maybe not.
However, you compounded the initial dilution by not draining the water heater. The additional water in the heater further diluted the propylene glycol, perhaps to only a few %. Your highest risk of freeze damage will therefore be in the hot water piping.
It takes a number of hours to freeze water at 25 degrees, so you may get away with this experiment if you get a short period of freezing with above freezing temperatures during the day.
Please let us know how it works out.
