Did a Haldex fluid change on my Tiguan 4Motion
Don't know which one is the OE Haldex fluid, there is the G-055 and a G-060. I chose the less expensive fluid (G-055). on the To-Do list is buy the container of G-060 Haldex fluid and do a VOA on it.
Looking at the not readily available SDS' on the interwebz, the major additives are ZDDP and Calcium Sulfonate.
Supposedly G055 is synthetic base stock and G060 is a Group III.