The previous owner of my old Airstream didn't dump AF down the drains, that left my with the fun job of replacing the P trap in the kitchen. The fun part was trying to find parts that would work, they had an oddball size for the traps. I learned real fast from his screw up use antifreeze.
I have never purposely dumped enough antifreeze by volume to cover the dump valve, I think I'll start doing that.
Perfect! Thank you!
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2015 Kodiak 291 RESL
2007 F150 5.4L King Ranch
After I dump the tanks and get it home to winterize I will use 2 one gallon bottles of "rv antifreeze" and pour into each drain. Than I grab a 5 gallon bucket and put it under the dump value and drain the gray one more time. Discard that in my home toilet and leave the black alone.