When you guys are heating this oil up are you draining anything out of the bottom or are you just letting the water and antifreeze boil out the top?
Heck if I know. I just work here.
Seriously I think it takes some of both. It depends on how much water is in your batch, and how long you want/need to heat it. If it sits for a few weeks, one is supposedly able to drain off most of the crud and water from the bottom. Use a cone shaped barrel bottom for better draining. OR you can pull the "good" oil/atf off from the top with the transfer pump. Use a clear hose.
But I still do not have an answer on the antifreeze. I do not know if it stays bound to the water or does it evaporate off when the oil is heated to 150 deg. or more.?????????????????
I have been of the understanding that centrifuging is needed to get the final water, sub micron carbon and other metals, and antifreeze out.
My experience has been very limited so far. My set up is still in process.
My info is a summary of the general concensus out there from several sites.
So I am not an experienced user yet.
This is an ongoing dark secret experiment so far.....
Hopefully someone with more experience can answer this question better for both of us