Thanx Rupurt I have spoken to Johan from J K Products who is the agent and he says that there is no guarentee on engine bearings and that after run oil is required if you lay the motor up for more than two weeks, well all I can say it would have been nice of the salesman to tell me this is required for this engine. He also said that castor oil added is not recommended as after a while you wont be able to turn the motor over ( cold seize if you can call it that ) do you add castor to your fuel and what fuel are you using?