[Mastiff107]

Ethanol does absorb water from the air. I've never had a separator on a car but I do have one on my boat. With a 30 gallon tank and the boat sitting on the water over the winter I would get about 8 oz of water in the separator when I used ethanol blend gas. I was surprised how much ethanol actually soaks up. I switched to marine gas (ethanol free) and no longer get any water in the separator.