Don't forget if it gets worse when it runs clean or replace the PCV. They can pressurize the crank case and make minor leaks worse than they really are. Most of these engines are bad for V/C and oil pans. Not much else on them can leak but the rotational seals and the 2.6 only has a front and rear crank. If it's getting on the exhaust I suspect valve cover. That's usually the only leakable spot higher than the exhaust and it can run EVERYWHERE like Andy mentioned. I've seen them be misdiagnosed as head gaskets, rear mains, etc. Bad thing is replacement v/c gaskets aren't too great either. Just something youre going to have to replace regularly. The one on my freshly reubilt engine is leaking a little already.