Any input? Seller is completing a manual gear tranny swap on the '05 Passat GLS TDI, using a DUK euro gearbox that will get here from over the pond tomorrow. I live in the mountains of Idaho and it does get cold for a few months in winter. I was thinking of just sticking with OEM VW synthetic, and I read that the current code is now 070xxxx rather than 052xxxx or 060xxxx. But it is confusing to me. Any input?