In case folks haven't watched these video's this guy does real world testing on various fuel/oil additives with lawnmower engines.
https://www.youtube.com/watch?v=J3F3jDa2xhg
Some of the stuff he does is pretty interesting.
https://www.youtube.com/watch?v=J3F3jDa2xhg
Some of the stuff he does is pretty interesting.