Why is my Antifeeze freezing?

[Moose29]

Thanks for the reply.
I wasn't worried about my method, but just the Anti-freeze freezing.
And we are actually in Crossfield!

[Cracker]

This puts a dent in my thinking - but only a little one. I plan to take occasional winter trips with my B+. I'll use a jug of RV antifreeze to flush the toilet direct - but I'll have to make sure that the cabin heat is high enough to liquefy the antifreeze in the toilet and the jug first.

[rlh1957]

RV antifreeze forms to slush instead of freezing solid and expanding like water.
Most all liquids can freeze to semi-solid state.
Diesel fuel can form into gel.
Most liquids do have an absolute temperature limit
before freezing or boiling off.
The RV antifreeze container probably gives temperature protection limits.