Just finished a tank of fuel with Sea Foam- 32oz to 30gals.. Although I see a marked difference in the carbon at the prop, I didn't get better performance. I figure carbon buildup wasn't an issue for me, but buying the boat used, I wanted to try it.</p>
I still have a pause when punching the hot foot out of the hole, and the idle is rough as a cob when the boat is in gear. It also stalls at idle when I put it in gear. Not significant issues, just frustrating at times (when slowly approaching a dock and putting in reverse in order to"kiss" the dock!).</p>