Forum Discussion
JaxDad
Nov 17, 2016Explorer III
Gjac wrote:
To answer your question directly windshield washer fluid is good to -20 degrees and is less than 1/2 the price of RV antifreeze.
That's an incredibly bad idea.
The 'antifreeze' is alcohol because it's designed to EVAPOURATE so as not to form ice on your windshield.
When you pour it into a tank with as much surface area as a grey or black tank, it evapourates very quickly and leaves you with a tank of straight water.
About Technical Issues
Having RV issues? Connect with others who have been in your shoes.24,327 PostsLatest Activity: Oct 26, 2025