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The diff and gearbox oils are definitely different if you want either/both
to last as they should
On our race Triumphs we normally use 85-140 diff oil . This used to be
called EP85-140 (EP for extreme pressure), but nowdays they drop the EP and
just say GL5. All the big brands have this grade, as its commonly used in
light commercial vehicles.
The brass syncro gearboxes cannot handle most GL5 rated oils for long.
Sulphur compounds in the additive package erodes the brass materials. There
are endless articles floating around about this, and i can support it from
decades of experience overhauling gearboxes. GL4 oils dont have the same
additive package and are just fine. Pick a brand you like. Some suppliers,
like Redline, make special note of this on their spec sheets. Under no
circumstance use Redline Shockprooof Green.. you will have zero syncros
withing 12 months
Terry O"Beirne
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<div dir=3D"ltr">The diff and gearbox oils are definitely different if you =
want either/both to last as they should<div><br></div><div><div>On our race=
Triumphs we normally use 85-140 diff oil . This used to be called EP85-140=
(EP for extreme pressure), but nowdays they drop the EP and just say GL5. =
All the big brands have this grade, as its commonly used in light commercia=
l vehicles.</div><div><br></div><div>The brass syncro gearboxes cannot hand=
le most GL5 rated oils for long. Sulphur compounds in the additive package =
erodes the brass materials. There are endless articles floating around abou=
t this, and i can support it from decades of experience overhauling gearbox=
es. GL4 oils dont have the same additive package and are just fine. Pick a =
brand you like. Some suppliers, like Redline, make special note of this on =
their spec sheets. Under no circumstance use Redline Shockprooof Green.. yo=
u will have zero syncros withing 12 months</div><div><br></div><div>Terry O=
"Beirne</div><div><div><div class=3D"gmail_signature"><br></div></div>
</div></div></div>
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http://www.fot-racing.com
Archive: http://www.team.net/archive
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