Uh oh, religious war starting (again) ;)
I used 20W-50 in my gearbox/OD for nearly 20 years and 80K miles
with no problems. I recently switched to RedLine MT90, which I feel provides
a smoother shift and quicker O/D engagement.
The one thing most people agree you do not want to use is EP ("Extreme
Pressure") gear oil ... they contain sulfur compounds that allegedly attack
brass components (synchos, in particular).
bs
********************************************
Bob Spidell San Jose, CA bspidell@comcast.net
'67 Austin-Healey 3000 '56 Austin-Healey 100M
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>A local old school Brit mechanic always preached Castrol 30 for
> transmission. Is there anything in the 20/50 that could damage the
> synconizers?
>
> Thanks,
> Scott
> Mashed BN7
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