Problem after oil change
I took my 2014 Cayenne Diesel to a local German shop. Used them before, never had a problem, great work and half the price of the dealer. This time not so.
It turns out one of the techs purchased it from the original owner. They told me they could work on the diesel, no problem. Had oil changed. Now the engine sounds different, and has a slight vibration. I also noticed the shifts are at a higher rpm, specifically 3rd to 4th. I also have a small oil leak.
The engine was smooth as silk before. Could they have used wrong oil?
Leak should not be a problem. Might be lose filter.
Shifting is very concerning. Any ideas why this would happen in a oil change??