Should I use StarTron w non ethanol gas?

[El Capitan]

I use non ethanol gas, it doesn’t advertise any additives, it’s marketed as Rec gas mainly for small engine equipment.

I use it in my truck, Harley, and boat and there is a noticeable improvement, the engines even sound better and I do feel a difference. I usually throw in a bottle of sea foam every other tank in my truck but not my old Harley, it’s a plain shovelhead engine.
I use it on the boat and add Startron or similar product during winter layup but wondering if I should be adding something to it since it pure gas w no additives?

There is a valvtec gas station on the river very close by but it’s not ethanol free.

Thoughts?

Thank you

 

[MonacoMike]

I have for years and never had a fuel problem so I keep doing it...

MM

 

[JimT]

Startron is cheap insurance. I add it in the fall even though I don't winterize. I fill the tanks in November and don't burn all of the fuel over winter.

 

[susanandlance]

Recommended by my local Mercury/Mercruiser master mechanic for years and years, and best thing is you can purchase at Walmart with other Quicksilver/mercury parts like oil and filters