[Dave at Pelican Parts]

The drain and fill plugs (remove the fill plug FIRST!!!) are 17mm Allen-head. Your local VW Bug specialty shop will carry the socket or the wrench--the Bugs used the same thing.

Mobil-1 is better in some ways, most likely. But I still reccommend Swepco specifically. The 901 and 915 gearboxes just seem to like it. The synthetic might even be too slippery for the synchros to work properly, which will result in all kinds of nasty grinding noises.

--DD