Late last year, got a used 2009 R1200RT with 8,000 miles. I recently had the 12K tune up and had a question the BMW mechanic could not answer. At the 12K tune up, I mentioned that when I stop, I can smell just a little burning oil. I checked the bike over and can see no visible smoke. The mechanic said he could smell the oil too but could not find the source without doing a lot more work. The bike does not leak oil, that is no drops on the garage floor, nor does the oil level seem to be dropping excessively. I estimate 1/3 quart in 4,000 miles. What could be wrong? Or do they all do that?