Leak
About 1 year ago I started seeing little oil/dirt areas built up around the outside of my engine underneath. I was like, what the hell. I took it to my friends dealership (where he works) and put it in the air. Took brake cleaner and cleaned it all off spotless everywhere. I tightened every bolt I could reach, oil pan, engine cover, everything. The best I got from any of them was just a little tiny snug, most were totally tight, nothing was like stupid loose. 1 year later its still 100% spotless of any oil/dirt spots. My engine was 6 years old at the time.....
Nuts and bolts work loose over time and gaskets will leak.
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Oil pumps dont create presure only movement of oil to lube cirtian parts of your motor such as your cylinder walls, crankshart camshaft and various other parts of your car.

