To check and see if it is the crank shaft seal or cam shaft seal, unbolt the plastic timing belt cover at the top (under the spark plug wire routing attachments), pry it back and look into the timing belt and such with a flashlight. Look for the timing belt to be coated with oil. Another thing that works is to degrease the oil pan area under the engine and power wash it. Then have the engine running and inspect the underside or have an assistant rev up the rpm's and get the oil pressure up there for it to leak.

That may indicate your problem. Even my 3.0 looks like the oil pan is leaking but it is only oil buildup from the time my crank seals were leaking and for pouring oil when its windy and makes a mess (I never use a funnel).