Subject: grease rack when replacing boot? '88 5kcstq

[Christopher Ritchie]

Ken wrote:

I'm replacing the boot on the rack I'm putting into my '88
5kcstq.
The Bentley says to lubricate the center bushing/o-ring, using
"gear grease".  This reads different to me than "bearing
grease",
which is all I see in the local stores.  The only thing they
have that
is labeled for gears, is "gear oil".

Should I look for a specific type of grease, or is it okay to
use the
"disc brake, wheel bearing grease" I have already?  I don't want
to
use something incompatible with what's already there, and I
don't
want it to eat the boot either.  I heard that WD-40, for
example, will
eat the boot.

The old boot on the rack I'm replacing looks pretty bad in the
middle, all chewed up and kinda disintegrated.  It is much worse
than an on-the-car inspection would have indicated.  Both racks
are
ZF remanufactured units.

I'd like to lube it while it's out.  What kind of grease should
I use?


I don't know.  But I think it was Phil Payne who once posted that some Audi
technical manual stated that grease should never be used on anything rubber
in an Audi.

How about Pentosin?  It's usually safe to use the fluid that the rubber will
be exposed to in use.  It should be designed for that.

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