1. Nothing wrong with 0 W40 whatsoever.
2. What was the oil level when you got home?
3. Did the car by chance overheat at all?
4. What is the coolant level?
5. Did the temperature gauge move even a little past the 12 o'clock position?
6. What noises does the car make when you turn the key now?
Originally Posted by E36 Phantom