It must be a synthetic gear oil for a start. Although in theory GL5 oils
will attack copper based products inside the box there doesn't seem to be a
problem with the large bushes and synchro rings unlike the thin copper shims
inside a diff, so I would suggest a synthetic GL5 gear oil. If you are the
panicky sort and want the same oil for a conventional diff as well as the
box locate a synthetic gear oil to GL4. I wouldn't suggest any additives at
all as they can make a mess of the overdrive clutch.
John Kipping
----- Original Message -----
From: "Charly Mitchel" <charly@mitchelplumbing.com>
To: <fot@Autox.Team.Net>
Sent: Sunday, January 30, 2005 7:19 AM
Subject: oils
> Hey guys and gals,
> We probably already had a discussion about this topic, but I'm kinda
forgetful
> of these things. What is the best oil to run in my TR6 transmission w/
J-type
> OD? This is in a race car and I want an oil that will take the higher
temps
> and provide good lubrication for the brass synchros. I'd also like it to
give
> fairly quick and sharp engagement of the OD.
> I'm also getting ready to assemble a differential unit with a Quaife lsd
and
> 4:10 gears. What would be the recommended lubricant for that set-up.
Again I
> really need something to handle the extra heat also.
> Thanks for any input.
> Charly Mitchel
>
>
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