I have a 99 Corolla with 163,xxx miles on it. For a while I've diagnosed it with an invisible oil leak that forces me to an oil/filter change before I actually want to. (Oil has to be refilled around 2xxx miles) Today I found some little deposits which I believe oil is escaping from. (I wiped the specific areas, and after driving the spots were once again filled with oil. Take a look at the screen shots.
http://tinypic.com/r/121fy9c/5
http://tinypic.com/r/i3w4ep/5
http://tinypic.com/r/eipo5v/5
Regular 99 corolla engine http://tinypic.com/r/2dj5oh/5
My mind is telling me I need a new head gasket. (However, exhaust doesn't blow white/blue smoke and when I wipe it doesn't contain any oil.) So it seems like I'm going to waste my money. What do you guys think?