Sunoco race gas comes from the Factory with a fuel additive that will keep the gas stable in the can with the lid on and covered up from sunlight for at least two years.make sure you install a fuel shut off valve in the fuel line and turn it off and run out the gas of the carburetor before you...
Try using some Sunoco 260 Gtx 98 octane ethanol free unleaded race gas with a mix of 2.7 ounces red armor oil .you be surprised at the improvement in power . I use it in my FS130 R AND RUNS GOOD .