How much Sea Foam do ya'll use in your 2 stroke outboard... What ratio?

The back of the bottle says 1 pint treats 8 to 25 gallons of gas.
or 6 to 12 of gas/oil mix.

Thats kind of a big margin.
engine is a '92 Johnson 115

I have a 92 40hp rude . I use 2oz for 6gal gas mix . Have not started boat in 7 mo till today . It started right up let it run for 10 min . Smooth idle . Good luck

I used 2qts/25gal on my 95 Mercs. I was also trying to get some of the neglect out of the engines from the prior owner. That rate is above the max. The engines ran rough, smoked like a stack but after mixing 3 gallons of SeaFoam like this the motors are now purring.

I use one cup per six gallons.

The 8 to 25 gallons refers to the minimum and maximum amounts it should be used. The 6 to 12 refers to the ratio of seafoam per 6 gallons of gas. Do the math and you will find 2 ozs per gallon.

Hey guys looking to find out how to keep my motor in tip top shape , I recently bought a 2000 nitro 700 with a 75hp tracker motor by mercury marine and want to know why it smoke will idling and when idling it kind of runs a litttle rough what do u guys recommend me put in the gas. Also need to know how to check oil that is in the lower motor unit there is 2 screws towards bottom of motor , one reads vent other says oil level ??