From: Chris Kent Kantarjiev <cak@parc.xerox.com>
cdenzler asks:
I saw PhilE recommend 30W non detergent for someones MG trans.
No, Triumph owners should use 80-90 weight GL4 (not GL5) transmission lube.
There seems to be some difference of opinion on this. The factory spec
for TR2/3's is SAE 30 engine oil (50 in hot climates). I have seen
aftermarket manuals that suggested 80 weight gear oil in these cars. I
don't know what the TR4/5/6 factory recommendation was; it's basically
the same transmission, if they switched to recommending gear oil, I
imagine it's OK to use either.
I have always used engine oil in TR3's, and it has worked well. I
believe gear oil of equivalent viscosity would work as well or better,
*except* in overdrive transmissions, where I might worry that even GL4
oil had enough EP additives to keep the clutches from working right...
-john
John Wroclawski
jtw@lcs.mit.edu
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