I saw another thread that the poster had mentioned that he was experiencing oil coming out of the airbox, due to the crankcase vent.
This aroused my curiosity to ask the rest of you this quesiton:
How much oil does your bike use? I have had all sorts of advice here because when I fill oil to top of mark on the dip stick (with the stick sitting on top of the hole - as opposed to being fully screwed in) I use oil and it goes down rather quickly. I don't have any leaks, so my conclusion is that it is being "sucked" out and back into carbs and burned. However, the advice has been is to leave the oil level down somewhat (like to lower mark) and don't worry so much about it. It should use considerably less oil.
In order to try to help remedy this, I purchased and installed a new "reed" type breather valve, but nothing changed in respect to oil usage.
Someone else has also suggested oil usage due to worn valve guides which still could be, but I doubt it.
Why? Because when I installed new Needle jets, and jet needles in my carbs the other day, the left carb was visibly saturated with oil, which could only have come from the air box through the carb tubes. Ironically, this was only visible in the LEFT carb and not the right carb.
When discussing oil usage with Rusty @ Max's, he says that according to BMW, acceptable oil usage is approx. 1 Qt. per 600 miles - waaaayy too much to me. He suggested to simply run a lower amount.
What do all of you experience in regards to oil usage and crankcase breather oil misting?