Ok, I took my motor totally apart this last weekend and i noticed that there was oil/black liquid in my intake manifold. i was wondering what could of caused this? could my seals be bad? or is it just my imagination?

 

i think that's normal coz of the pcv venting the blowby gasses. mine was sticky black paste like ****.

 

Yep, the PCV valve vents it back into your intake manifold, lowering your octane slightly. You can use an oil catch can to filter this out.