Whether you own a motorcycle, classic car, a boat, jet ski, mower, chain saw, line trimmer, or anything else that runs on petrol, if it is used infrequently the fuel in the tank will go stale. Petrol begins to deteriorate after little more than a month. As a general rule, the higher the RON (octane) rating of the fuel, the shorter its storage life will be. Running stale fuel through your engine can result in difficult starting and reduced performance at best, and at worst you could be looking at a very expensive repair bill.
Treating your fuel with STA-BIL keeps it fresh for up to 12 months and stops the formation of gum and varnish deposits within the fuel system. It contains corrosion prevention additives to fight against the damaging effects of Ethanol in fuel and also cleans fuel system components such as fuel injectors and carburetors.