Did you get the cover off the engine yet? The filler tube is on top of the motor and can be easily seen. Lean over the engine from the right side of the car and the oil tube starts from the lower left turns toward the center of the engine then goes diagonal toward the left side of the engine behind the drivers seat. You'll really only see the tube from the filler in the trunk to where goes under the air intakes. There is a joint just to the lower right of the throttle body (as seen from side of car). Mine leaked at that joint and the dealership says it happens a lot. I've not heard many complain about it on the forum though. I didn't know there were 3 pieces, thought there were only two.
Here is a picture. The circle is the joint.
