-40 RV Anti Freeze

Question

I have been winterizing my class c by first blowing out the lines and then pumping RV anti-freeze into all the lines, traps, etc. I then pour about 1/2 gallon into the toilet. We had a cold snap where tempertures hit close to zero for a few nights and I noticed that the antifreeze in the toilet was almost frozen; went in to run the generator for 2 hours; it was more of a hard slush than solid. Hopefully it does not get to the point where it expands before truly freezing. Have not had any issues in the past 4 years. Any thoughts?

pianotuna · Answer

Hi,Do not dilute RV antifreeze : testing RV antifreeze

carringb · Answer

RV antifreeze does get slushy. As long as it doesn't freeze solid you are OK.

grandpa_joe · Answer

I have also noticed this with -20 and -40 windshield washer fluid, perhaps from water being a component? I never dilute.

choochooman74 · Answer

RV antifreeze will slush up, but it isn't suppose to expand like water when it does.  The expansion of water is what destroys things.

btpo1 · Answer

ChooChooMan74 wrote:RV antifreeze will slush up, but it isn't suppose to expand like water when it does.  The expansion of water is what destroys things.x2, water expansion will destroy when it can't go anywhere. JMO

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-40 RV Anti Freeze

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