Originally Posted by RML

I am relatively new at this, but I would not say that oil in the air filter is normal. It may be common, but I don't think it is normal. I found oil in and dripping out of my air filter assembly and also found that the air filter (K&N) was quite dirty. I cleaned it up and the oil problem stopped. I also had a lot more zip. I concluded that I was starving the engine for air and it was sucking it up the oil return tube, along with oil.

I also read an excellent article on this forum about changing the oil check valve at the bottom of the tube (accessed by taking off the oil pan). I will be doing this as well.

Richard