[gregpark]

Sounds like you're fine, burn it up. Do you have ethanol in your gas up there? That crap is a water attractant and a partially filled tank left for months can have water in it. Especially if it's been parked in the sun at all. You would've experienced sputtering already if your tank was contaminated, as water is heavier than gas and your pick up is at the bottom of the tank. I put a little ATF in my small engine tanks that don't get used within 2 months. Cheaper than preservative and works the same. Without it I've had to clean out varnish flakes in the tiny carburetor jets using a single wire from a scrub brush. I miss the good old red gas that smelled like gas.