Originally Posted by Bikeguy Joe
That's too much oil....Most of the "instructions" that come with these bicycle motors suggests using 16 or 20:1 because that would be the correct mix with ancient, 30 wt. motor oil.
Too much oil will cause rings to stick (really bad) and excessive carbon build up.
My instructions said to use 20:1 with synthetic -- is this a less than complete effort to modernize those out dated instructions?
Anyway, thanks for this explanation, BGJoe -- but now I'm at a loss. I know this is going to be asking for 40 different recommendations, but, I'm still on my first tank of gas--early in the break in period--what should my mix be?