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On Mon, 2002-02-25 at 17:34, JaransonT3@aol.com wrote: > OK, good info....... > > So I have a 66 Square. Do I have the bronze synchros and will be OK? Or do > I have the brass synchros and need to switch? Anyone know for sure? > It depends on whether the syncros have ever been replaced before. The replacements were the cheaper ones. I would go with the GL-4 oil just to be on the safe side. The GL-5 made the trannies harder to shift too. Too much surface tension on the oil. GL-5 was introduced for the automatic differentials, to provide lubrication for the high hypoid shear loads in the automatics. With GL-4 in an automatic differential, the ring and pinion would last more than a hundred miles or so. If you ever get a chance to look at an automatic differential, look at the extreme hypoid offset. -- Russ Wolfe '66 FB MT (It drove) '71 FB AT russw@classicvw.org http://www.classicvw.org ------------------------------------------------------------------- List info at http://www.vwtype3.org/list or mailto:help@vwtype3.org