So far I have replaced the distributor o-ring, vtec solenoid gasket, valve cover gasket, oil pump o-ring, front crank seal and oil pan gasket on 170K mi. civic. what else is left to leak on the pass side of the engine. Looks like it could be coming from the head/block. Yes, the seals and o-rings are seated properly. The oil (clear after oil change) runs down the engine stamp. It is dry under the ledge towards the firewall on the engine from the leak location (above the "HA" stamp).

 

oil can defy gravity when its under engine vibrations so your guess is as good as mine maybe rear crank seal ???

 

So you are saying that the oil could be traveling up before it goes down?

 

The vtec solenoid gasket, dist o-ring and oil pump o-ring are all OEM parts...