Find somebody in your area that sells it in bulk. I buy mine at a local sho (Accurate Marine) for $14 a gallon, bring your own container. A few years ago I bought 2 five gallon Blue karosene platic gas cans at sears for about $10 peice. Every once in a while, I run down and get 10 gal of oil and a few bottles of Ringfree. My motors have been VERY happy.