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« Last post by flatfour on Today at 11:33:56 AM »
I've owned BMW airheads on and off since the 1970's when I had one of the last R90S's into the UK.
I think that Matt Hull (Classic Bike Guide) did say that the bottom - end problems on his bike came through low oil level. Most of the older boxer engines had a real thirst for oil and on touring trips with other owners, often at the end of a long day's ride on the continent, we would buy a gallon of 20/50 and share it between three or four bikes. There was never any left in the container!
My understanding is that both the gearbox and shaft drive is difficult to self - service though there are a few well - known businesses that offer overhaul if needed.
Perhaps it might be worth joining the BMW Club, which has lots of information available, as well as a tool hire service for DIY work that includes nearly all of the special tools ever offered by BMW?