I would buy fresh oil just to be safe.
But for the sake of argument, I tend to agree, if the oil & water wasn't turned into an emulsion, you would expect it to separate out with time. But I'm guessing, I have never done the experiment to test this out, and it's not pure oil so the detergents present may have an effect. Also don't car engines get water condensation due to short tripping, and isn't the solution a long drive to warm up the oil and evaporate the water?
When I drain water from some old air compressors, from the bottom of the chamber. The water comes out first, then the oil second, then the air. So I would drain off the water from below, until fresh oil was coming out.
Except I probably wouldn't risk it, except maybe on an old beater I just didn't care about.
I'm not saying do it……I'm just saying I can see where you are coming from.
But for the sake of argument, I tend to agree, if the oil & water wasn't turned into an emulsion, you would expect it to separate out with time. But I'm guessing, I have never done the experiment to test this out, and it's not pure oil so the detergents present may have an effect. Also don't car engines get water condensation due to short tripping, and isn't the solution a long drive to warm up the oil and evaporate the water?
When I drain water from some old air compressors, from the bottom of the chamber. The water comes out first, then the oil second, then the air. So I would drain off the water from below, until fresh oil was coming out.
Except I probably wouldn't risk it, except maybe on an old beater I just didn't care about.
I'm not saying do it……I'm just saying I can see where you are coming from.