R134a
A synthetic 5W30 will do you well.
The car take Castrol Syntec 5w40
5W 30 Synthetic Blend
Castrol Synthetic oil, that's the oil i use for mine.
Synthetic oil only. Check for the "latest & greatest" German oil specs. (Don't use Mobil One!!)
5w30
You can use the two keys to reprogram the car remote of 2000 VW Jetta.
Use exactly the weight recommended by VW. The brand is your choice.
5w30
5w30
The best type of oil to use in a 2000 Toyota Avalon is 5w20. This provides a good balance of viscosity with the ability to work in most temperatures.