The recommended engine oil for both 1.8 Liter turbo and 2.8 Liter VR6 is 5w30. I personally recommend 5w40 synthetic on the turbocharged 1.8 Liter.
It depends on the climate you live in. Consult the owners manual.
You may use Volkswagon G12 coolant or Prestone Extended Life coolant. If cost is a factor use the latter.
volkswagon bus
The Volkswagon
134a
5w30
yamalube is the best
Jetta. (volkswagon) Jeep. Jaguar.
10W-30
10W30
motor oil
10w30 motor oil