"cold start problem is gone, engine is smooth, no visible smoke.
Btw my engine needs reboring that's the main reason behind using boric acid. So i'm not in the position to give you a complete review. I guess now i can postpone reboring till next year."
https://www.xbhp.com/talkies/general...work-out/page3
Self experimentation: Simple as that.
Then you WILL know...
(Interesting reading there...
)