Just a heads-up! I don't know about scooters that much but when I ran customizing & repair shops in NH , I saw many engines that had WAY more wear than they should have had (for their age) because people ran what was basically an automotive oil in cycles. A motorcycle engine runs with way more heat than an automotive engine is used to. Saving a few $ on the amount of oil that is used isn't worth the cost of an eng. rebuild!
Irish
P.S. My $ .02.