anybody use auto antifreeze in your drains

RV antifreeze is cheaper than Prestone. And, Prestone is poisonous. It shouldn't be put into the sewer.

I get that but the question is will it damage the trap?

I can't imagine it would hurt the trap.

Mark

Shouldn't hurt the trap.

Next time you dump the tank put it in a sewer, not a septic tank.
It will be diluted enough not to hurt anything in a sewer.

I always use auto antifreeze in the drain traps... one cup per drain... works great with no worries about them freezing.

I put pink in when I winterized but am concerned that the water from the skylight leak diluted what's in the trap...I am out of pink and am just adding a half cup or less of 50/50 Prestone just as an emergency measure because we are getting single digit weather tomorrow. I know it's not ideal but trying to get by in a pinch. Thanks guys.

It against the law in almost every state to dump the green stuff anywhere.

Use auto antifreeze in all my drain traps...1cup per drain ... Works great

Thanks guys!

I use winter 0* windshield washer fluid.