VW Jetta / Bora MKIV 1998 Euro,1999.5 US -2005
Now there's one.
If you've been having issues with your cooling system, leaks, possibly bubbles in your coolant reservoir or any sort of problem, this DIY might answer some of your questions.
Firstly lets get some stuff straight. ANY audi/vw engine in the mkiv era was designed to run on G12...