I have to help someone bring an old boat with 80 gallons of three year old gasoline up the southern California coast. I wanted to drain the tanks, but the yard couldn't find anyone willing to take on that much fuel; hazardous waste issues. The mechanic said the OB was running off the old fuel seemingly OK. Still, I'm reluctant to 'test ' it 20 miles offshore. Anyone have experience in fuel conditioners, etc? Trailering isn't an option, nor is siphoning enough to make a difference.Rick D.