Hi
I read somewhere that it is best to run these 21's with castor oil as opposed to synthetic oil. The manual states that castor should be used during run in, but doesn't mention normal running.
The article I saw was about these engines overheating with synthetic oil and too much nitro, so I'm wondering what ratio of oil and nitro I should use, as I'm using them in a twin I want them to run smoothly and in sync.
Thanks Barry