[Steve4golf]

I believe the synthetics are just better at cleaning deposits that may have plugged the leak before. You could try a "high mileage" version of the oil you're using or even going back to conventional. Sometimes an oil additive may help the seal swell a little to stop the leak. I would double check the location of the leak- maybe clean the area really well and then go back and check. At this age there are things like valve covers that could start leaking down the back of the motor too, though usually onto the exhaust, but can accumulate in the same area. Could be oil pan gasket leaking. Would hate for you to go through all of that trouble and it not be the actual leak. Finally had to change my valve covers on my 2006 (175k miles)back in the spring- both sides started leaking within months of each other.

Thank You, AgentX...did you do the valve cover change out ?...looks like a lot of work

 

[Steve4golf]

open heart surgery