Casbar wrote: I doubt if you would burn enough oil on a journey to harm the engine, therefore if no oil leaks or smoke, then you have not been checking the oil level and its probably been happening for a while. Nobody relies on the oil warning light to come on before checking the oil levels. You wouldn't in a car, so what is different with a bike?
Casbar i had previously checked the oil level, which I did when I washed the bike and put it away for two weeks. Would you then check it again when you pull it out of the garage with no sign of oil leaks on the garage floor. Bike rode 60+ miles without any problem, left work for 60+ mile return journey, approx 20'miles in felt a loss of power and then the noise. No warning light so when would you rely on the warning light, I would expect it during the ride to allow you to pull over and check the level. So why didn't the warning light come on, appreciate we all have our views, if a bike is fitted with warning features then I would expect them to work.
What I can't accept is BWM making assumptions and haven't properly investigated and just made reference to page 94 of the manual. Which I would say I've done more frequently, but the manual also refers to the low level warning light so why won't BMW investigate when the bike log doesn't show any warning being registered.