Oil Additives

Hi All,
My brother in law in Germany sent me a gear oil additive and the results have been great. Its base is graphite and the gear changes are softer and lighter. It also claims it reduces the gear oil temperature and reduces noise. My brother in law is a chemical engineer and has had a lot of experience with VW`s.
The brand is called Liquimoly and also has a product that quietens noisy tappets that might be interesting for the old WBX.
It was great to meet so many people from the Syncro family at the VW Spectacular and the display of VW`s was outstanding.
Cheers Dave