Gearbox Oil Specification

[Joe Robson <absjmr@bath.ac.uk>]

Hi,

Thanks to all who advised me on my 100mile oil change on my new Holbay.
Whilst looking in the Alpine Workshop manual, I noticed it says that
the same oil specified for the engine (ie 10/50) should be used in the
gearbox. I've always topped my gearbox up with 80 or 90w/50, I guess this
is bad... I always assumed gearbox oil was for gearboxes, will I have
dameaged my gearbox or overdrive? it seems fine.

Thanks

Joe

64 Alpine
69 Stiletto
78 Davrian
London