> 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.
It seems that 80-wt gear oil is specified for the all-synchro TR gearboxes
(TR4/250/6 & TR3B) but 30-wt engine oil is spec'd for the TR gearboxes with
non-synchro first (TR2/3/3A). As I recall, the Haynes manual illustrates
this as a significant difference.
-Steve-
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