Its great that you found a good dealer !

But I must correct the mechanic in the car shutting down .

The engine will not shut down under any circumstance unless it can no longer run ( out of fuel , multiple sensors failing etc )

As an example there was a post earlier about a Bora that had the oil light flashing . it was probably a wiring fault or something not an oil pressure problem . The car still started and ran , the only thing that will happen is the lights on the dash will go nuts and it will constatly beep and carry on telling you to stop . It wont stop until its completely out of oil/coolant and its cooked the motor to the point that its seized , and yes Ive seen this happen before !