I have a fairly major oil leak. It seems like it's coming from everywhere. I think it's coming out of my exhaust ports and covering the O2 sensor. I have to clean it off every now and then so that my gas mileage doesn't get too crappy.
I thought it was my valves so I did a compression check and my numbers were good.
What could it be?

 

spray the entire engine down with degreaser. simple green, apc, whatever..
rinse it, and let it dry. then keep an eye on it. you'll be able to figure out where it's coming from.