On Thu, 6 Aug 1998, Kenyon, Kirby T wrote:
> The previous owner was using the same oil in the transmission (4 Speed
> with Overdrive) that he used in the engine (Castrol 20W50). All the books
> seem to indicate something more like 90W for the trans. Does anybody have
> any ideas as to why the lighter oil and the implications of using it?
20W50 is actually not much lighter than 90W gear oil. Reason: they are
tested at different temperatures. I think the VTR web site (www.vtr.org)
has got some info on lubricants, in the maintenance section.
Lubricant choice, like many other things, seem like a real "owner
preference" thing. Luckily our Triumphs are robust enough that they don't
implode if you dump the wrong stuff in them ;-)