Rotary Owners' Club

I have just purchased a Commander and would like to replace the coolant.My questions are:Recommended additive, capacity of system, can the engine jacket be drained and finally the best way of doing the job to make sure that there are no air locks.Thank you in advance for your adviceTony

Having attended the recent NOC rally in Morpeth on my 650SS I was greatly impressed by the Commanders and their owners tales of effortless touring, so I am contemplating becoming a rotary owner.I could go and buy a jap tourer but as a life long Norton enthusiast I feel it only right to have a look a...