I am trying to give my 16 year old who lives in another state, a reliable car. I want to give her my 2007 audi a4 2.0. I took the car to be serviced, not at Audi. They replaced the OEM Audi Canister Purge Solenoid, and OEM Audi Updated Purge Solenoid Hose Assy. There was a quart and a half of oil in the intercooler. They said I would need a new turbo to fix the problem. I have no symptoms, no smoke, no burning oil, no noises. I called Audi and they said that all I needed was a new valve cover assembly, even though the place I took it to said the oil was coming from the turbo seals leaking. Advice?