ORIGINAL: Croozer
ORIGINAL: quarterscalelegends
After you replace your ring, run synthetic.
LOL, I bet a lot of people are replacing their piston rings.
So where in the Zenoah manual does it state that the piston ring should be replaced after break-in???
The manual does not tell you that. Its a manual based on the use of a weedwacker. You can run the engine after break in without replacing the ring... just like how you can drive your REAL car for 6k miles without an oil change.