Thermostat on the 2003 Golf

Golf had been running cool for a couple of months actually...  suspected a thermostat stuck-open.  Finally replaced it.  It was a pain to drain the coolant (especially since there was a bunch trapped behind the thermostat, so even after "draining" there was more to come when I pulled it out, and thus spilled some to the floor)...  but other than that the job went off without a hitch.  Pretty quick.  

And now the temp gauge swings right up to 190 and sits there perfectly.  Wish I'd done it sooner!