Hello Guys,

What grade gear oil should be used? Mine car is a '67S and will I need GL-4 oil or will GL-5 do fine. I've read that GL-5 contains 50% more sulphur and it tends to etch the synchros, causing them to wear prematurely....

Also is there any good using a LSD oil in a non-LSD tranny? Some have told me that the LSD properties is good to help the synchros....

So, GL-4 or GL-5? My VW calls for GL-4. How about the early 901 box?

Thanks!

Sprint.