Hey I just got a Danchee (Honda Copy 4-stroke) 125cc bike. I noticed that the tranny fluid is low. The book that came with the bike says to use a 50 weight SE or SD machine oil. However, I cannot find this oil locally, does it go under a different name?
If you have a cycle shop or dealer near you they will have gear box oil and they will know what weight to run in your climate if you don't have any place to go you can use any synthetic motor oil between 30-50 wt. depending on what the temperature is where you are.