https://www.wemoto.com/info/star_tron_-_enzyme_fuel_treatment This is fantastic! I have had three tankfuls with this stuff and the difference is startling. Early 300 series 900's suffer from hesitation on pull away due to partial blocking of the primary fuel circuit in mukuni carbs. It also helps big time with ethanol water separation. Water separation can rot the tank from the inside. They say ethanol is not harmful, so why do they only add it when they bulk tank at the petrol station ? It seems expensive I thought but I think its worth it. I thought I'd share it as wemoto are a great company and we need to support all the good guys. Bike past 53,000 on the shopping trip yesterday!
I keep this on hand in case I can't find any 100% gas. We still have plenty of stations that have a separate pump for those of us who do not want Ethanol. It advertised, although it's been a while since I needed to use it.
I absolutely agree, it was a lifesaver after winter storage a couple of years back. Bike: Thunderbird 900 with Mikunis. Fuel: 95 octane, 5 pct ethanol. I learnt my lesson and now stick to non-ethanol petrol like Shell V-Power 98 octane, but to be on the safe side I also add a shot of this stuff now and again.
I have been using silkolene PRO FST for some time and found that with an additive it helps combat the petrol problems of stale fuel, I have not seen this product but must agree Wemoto do have a good customer service