joebedford wrote:
TurnThePage wrote:
Once the water's gone, it doesn't matter anymore.
Isn't there a lot of water in the antifreeze?
pure antifreeze is either ethelyne glycol or propalyne glycol. RV is propalyne glycol based (safe for consumption, used in many food items). in pure form no water, and while the freezing point of ethalyne glycol is high (around 10F) it contracts when frozen s no pipe issue, while propalyne glycol has a freezing point around -70F.
Now lots of the RV antifreeze says it turns "slushy" somewhat below 0F or so therefore I suspect it is around 25% propalyne glycol from freezing charts I've seen.
Now some does contain alcohol.
