STA-BIL 22240 Marine Fuel Stabilizer - 32 oz.
http://www.amazon.com/STA-BIL-22240-Marine-Fuel-Stabilizer/dp/B001CAW2DK
Full line of treatments
http://www.goldeagle.com/brands/stabil/products.aspx
Thanks for that. We do have a backup 7000 watt generator as our emergency electrical energy source, and maintain about 20 gallons of fuel, but often rotate it through our other equipment to keep fresh as much as possible.
Will look up these resources you posted.