Haven't run my baby in about 3 mos. Went down for a visit this wknd, and did some maintenance. One of the jobs was fuel-water separator, which wasn't done in two years. OK, I'm negligent. But the gas in the old filter smelled as fresh as it did when I pumped it in months ago. I used Star Tron, and I can say I'm sold. In fact the gas smelled so good, I put a dab behind the First Mate's ear when I got home.