Forum Discussion

Explorer

Feb 27, 2017

Alternate anti-freze

Had an off the wall thought this morning. Why not use a salt solution for anti-freeze in the waste water plumbing? Would not want to put it into the fresh water system unless you are sure there are no metalic components (valves, connectors, aluminium water heater, etc) but why not the the p traps under the sinks? Everything I know of in the waste system is pvc.

Seeking Advice

Trackrig
Explorer II
Feb 27, 2017
Sure, if RV antifreeze cost $25 a gallon and you needed 10 gallons.......

Bill
downtheroad
Explorer
Feb 27, 2017
Why not just use RV anti-freeze.
Gosh, about $2.00 a gallon at Walmart.
Salt solution is not as effective and will likely be harmful to the dump valve seals.
Biker1mike
Explorer
Feb 27, 2017
Salt water will still freeze around -9 F. In the north extended temps below 0 is not uncommon.
Might work in the more southern states.
path1
Explorer
Feb 27, 2017
When brought up in the past, most everybody says it is bad for your system.

Other than that...has worked good for me:)
gbopp
Explorer
Feb 27, 2017
You probably can use salt as antifreeze.

However, to me, the price of RV antifreeze is cheap enough to make it not worth messing with salt.