creek....I only know of a couple of places with non ethanol gas in my area. I have been using 10 % ethanol in everything I have now for 5 years. I use Marine Stabil in the boat and I have not had any problems....I ran my boat for 4 years without a water separator filter....I finally put one on the boat last fall. I use Stabil in my lawnmowers and weed eaters, chainsaw, etc. never had a problem.