There is a dealership in Tulsa, and I've used them for routine maintenance. But is that the only option for my 2004 TT?

I've got an indicator light (coolant level/coolant temperatur) and it's pretty scary. What to do?

 

I know it is a little far, but I have 2 Audis, and on the one that is no longer under warranty, I use Eurosport in Norman. They are pretty reasonable, and allow you to bring your parts.