Sometimes the correct solution to a problem is the simplist solution. I was convinced that the ratio adaptor attached to my T5 held the key to my speedo calibration. I wonder how many guys running T5's are driving off the tach, when all they need to do is scrap the ratio adaptor and pop in the correct single gear????!!!!
As for the NWC's it was pointed out that the bronze synchro units.....which are basically the mechanical speedo boxes, were the candidates for regular gear oil while as you pointed out, the later model electronic speedo units, with the modified synchros were redesigned for the lighter ATF. About 5 months ago there was a huge post with the majority of folks electing to go with the ATF.
I went with the gear oil and my little 1985 mechanical speedo tranny is still smooth as goose-grease. I hope that all the new builders get the correct info on the proper lube.
Dave
