I recently had my car serviced. They replaced OEM Audi Canister Purge Solenoid and OEM Audi Updated Purge Solenoid Hose Assy. They drained the intercooler, they said there was a quart and a half of oil in it. They said the oil leak is because the turbo seals are leaking and that I need a new turbo. I called Audi for a second opinion and they said they never see that in this generation. They are certain all I need is a valve cover assembly repair. This is for my 16 year old daughter, I need her to have a reliable car. The repair shop said trade it in right away. Advice please?