Fuel additive my boat dealer recomends any feedback?

[Dave Shady Larsen]

k100 MG

They sell it of course as well as stabil regular and marine but say this one is
far better than stabil.

anyone use it? Its not cheap 10$ for 20 gallons of gas treated.

http://www.k100fueltreatment.com/main.html

Thats the stuff. I did buy a bottle on their word and going to
try it in the outboard and I do not use ethanol at all.

 

[Capt. Larry M]

Fuel additives are alot like supplements, most arent needed. Stabil IMO is all that you need