I've been hearing a bit of burping recently on the back of the Cayman if I don't drive the car often enough. The last time I heard that noise (but much louder) was when I accidentally left the cover where the oil and coolant fillers are located in the trunk open. From what I understand this is part of the natural burping process as the coolant expands, however, my understanding is that the rubber gasket on the cap can start to dry up and fail over time so I figured now would be a good time to replace it.
New coolant trunk cap |
They're cheap enough to replace and this one is now 16 years old so it's probably overdue.
Maintenance Update:
Mileage: 50,850
- New oil coolant expansion cap