Hey guys got a question. I am finishing up my redo of the rear hatch fixing rust and replacing seals. I started inspecting some of the engine components I received with the car and noticed that there was an oil like residue (which I assume is oil) coating the inside of the turbo. The turbo itself has 0 shaft play, no damage to the prop, and spins smoothly. However, I did notice that the metal oil inlet tube was not on correctly (actually it was only being held on by a single screw). Would this cause the oil inside the turbo or is there another culprit I should be looking for? Also what is the best way to clean and prep this to be put back on the car? I was thinking of just utilizing a foam based engine cleaner but am not entirely sure that would be ideal.