Interesting thought, but I have never used any kind of fuel additive and have never had any problems that would make me inclined to.
I use stabil every year. What has worked for me it to fill the tank, shut off the fuel, run the engine until it quits and then shut off the ignition. My equipment usually sits from November to late March.
Must be nice for it to get a break. I had to stop mowing due to more rain/rain storms again at 1730 today. I usually have to mow atleast once a month from Dec to March when it starts raining again. But the fuel always gets either Stabil Marine or B&S Fuel Stabilizer in it. B&S now sells one for Ethanol that looks like Stabil's.I use stabil every year. What has worked for me it to fill the tank, shut off the fuel, run the engine until it quits and then shut off the ignition. My equipment usually sits from November to late March.
Interesting that you say this, I got pooh-poohed on here by a guy who said that no small engine should ever be run on anything higher than 87 (I was running some 91 through as I figured it would help clean things out).With the crappy gas sold these days I am astonished that your gas does not turn into mud over the winter.
Also... air cooled engines should have at least 89 octane because there is not enough alcohol in 87 to cool the engines properly. I alsways use 92 octane in my air cooled equipment. Stihl INSISTS you use at least 89 octane in their products.
I'm with Sheldon on this topic. I've never used a fuel additive and have never had a fuel related issue on any small engine. As an example I used my pressure washer in Septemebr for the first time in some 2 years. It has a Honda 5 HP engine. I was worried the gas had gone bad or that the carb would be gunked up. It had about a half a tank of the old gas in it. Hooked up the garden hose, set the choke and she fired right up on the fourth pull. Once it warmed up she ran great for a couple hours of deck cleaning. Ran out the old gas and now it has about a half a tank of "new" gas in it. Of course the new gas came from one of my gas cans which I only fill two to three times a year. I guess I'm just lucky but I have yet to be bitten by bad fuel.
Funny thing is all my cans are now empty so tomorrow I'm planning to fill them for the winter. Now I'm questioning what grade to buy and wether or not I should add stabilizer, I guess it couldn't hurt...