SFguy, et al;
I've had good luck with the paper towells stuffed up between the Speedo Cable and an air duct way up there. This past week I caught my first drip on the floor mat and replaced the towels. At least that keep the oil "contained" and off the shoes. As far as the location of the vent, it's basically under the air intake hose, about 4" above the height of the sensor. Look for a good sized horizontal surface. The cap should be somewhat loose and rotatable. | 
