Originally Posted by Major
Generally RV Antifreeze is good to about -20 to -50 at full strength depending on the brand, but the more water that is mixed with it the higher the freeze temperature will be.
If you poured it in full strength and did not add any water you should be fine (it must have been REALLY, REALLY cold to start to freeze).
I live in North Carolina so I don't have to worry about really cold temps for extended periods (teens usually for a few days is about as bad as it gets) so I don't use RV antifreeze at all anymore. For me it is too much hassle.
For years I have only used an air compressor to purge the system after opening the low point drains and emptying and bypassing the hot water tank and have not had any issues.
If you purged the fresh water tank with the water pump after draining the tank completely, for me here that would be fine because any water left in the tank or line would have plenty of expansion space after freezing and would not hurt anything.
Respectfully this is very bad advice you never want to add water to Rv antifreeze, it is NOT like automotive antifreeze!
• Protects to -50F (-46C) • Safe • Odorless • Tasteless • No mixing required • Non-Toxic • Propylene Glycol base • Safe for fresh water systems • High grade antifreeze for complete freeze protection requirements • All ingredients are listed in the U.S. Federal Register (GRAS)
The only time you ever add water to Rv antifreeze is if its concentrate, and I've never seen anyone have Rv antifreeze concentrate.
I guess I may have miss understood what you were saying.
I'm not sure why anyone would want to add water which is why I questioned your post.
2015 Columbus 320RS
2008 2500HD Duramax
2015 nights camped "34"