i have a kit built motorized bicycle that I bought for my son at college. I found out that he could ride it as a moped without insurance or a cycle endorsement.$12 for 3 years. The thing is a blast .25mph plus. I spent 12 hours correcting things that the previous owner did wrong or broke. I was wondering what would be a good oil for a cheap chinese 2 stroke. I used penzoil yellow bottle multi use 2 stroke oil for my first gallon and someone gave me a little bottle of red max (citgo) semi . Not sure what to use and unsure of the proper mixture. Any thoughts?