In searching the new archive (how great to have it back), i was unable
to find adequate answers to the following:

Does anyone know what size allen/hex wrenches you need for the
transmission and front differential drain and filler plugs on a '90
syncro?  the transmission oil drain plug looks like it may require a
special/modified wrench due to the angle...is this so?

Does anyone in the bay area know where to buy these?

Finally...Bentley calls for GL-4 SAE 80 gear oil for both the syncro
trans and front dfferential.  Redline MTL is 75w80 GL-4 gear oil (with
properities close to 85w at high temp) while Redline MT 90 is 75w90 GL-4
gear oil.  Otherwise, the two oils are the same.  I bought MTL before
researching which i should use since it meets the required specs.  I am
now wondering, however, whether MT 90 would be a better choice.  In a
manual trans., would a heavier oil be better or worse than a lighter oil
where both meet specs?  The van is driven in temps ranging from -6
degrees F. to 100 degrees F., although typically in the 40 degree to 90
degree range.

thanks
...steve
90 syncro westfalia