oilhammer
Certified Volkswagen Nut & Vendor
My truck, which is now old enough to be eligible for historic vehicle plates in Missouri, still has its original thermostat. And it seems to work perfectly fine. I've replaced the thermostats in both my ALHs, but one has been in there for over 200k miles (since I got the car and untooefed it years ago). Still seems the same to me. My BHW's got replaced when the CTS finally went wonky, just because. It was around 200k miles at the time I think, and maybe 10+ years old... can't remember. I'm sure I've replaced on on my AWM at some point, but it was a while ago.