I recently changed the oil on the car about a week ago and I see a leak under the car and it looks like its coming from the turbo, but before I changed the oil it looked like there was already a leak somewhere.

Do you think I need to replace the turbo? How do I solve this problem?

Also My reverse lights aren't working. Its not the bulb, or the fuse in the dash of the car.

How do you get or change the plug on the transmission?