Thanks for a really helpful reply. I would read tyhe service book if it was available to me. I asked because it isnt.

No. It would have been better had you been polite, friendly and helpful rather than snotty and unhelpful.
AFAIK, there is no "service book". Certainly I have not had one with any of my three GS so far.
The final answer ( I went with the main dealer since I am thinking of selling) was engine oil and filter, gearbox oilo, brake fluid, valve clearances, throttle body balance, road test and an overall condition check. Cost £ 242.


