[E36 M3] Vibrations with Redline diff fluid?

["Lopez, Carlos F" <Carlos.Lopez@xxxxxxxxxxxxxx>]

Dear digesters,

OK before I go blaming the Redline juice in my diff., please help me
diagnose my problem.  This doesn't happen during normal driving, we're
talking high g's and pedal-to-the-metal situations.  Example:  so far
I've only noticed this during right hand turns like at SIR, right hand
turn coming onto the straight going about 70 or 80 mph and climbing
(going faster).  I feel a vibration (never present before) coming
through the accelerator.  Best I can describe it is sharp but distant
(if that makes sense).  Not like the ABS activating, which pulsates the
hell out of the brake pedal.  Could the vibration be the limited slip
not functioning properly?  I wouldn't know what that feels like if you
hit me with the diff. upside the head.

The only reason I think it's the Redline goo is that is the only thing
I've changed in the car since my last track event.  I'm using 75W90 in
the diff. and D4ATF in the gearbox.  The ATF difference was WOW!  Very
smooth.  The Redline diff. juice is NOT the NS for non-limited slip
diffys.

I think I remember from a very long time ago, someone posting about a
problem with the Redline stuff and switching to an off the shelf
synthetic product and saying that's what BMW was using.  Anyone know
what that is?

Any advice would be helpful.  My warranty just expired and I'd hate to
kill my diffy next track day this Sunday.  Thanks.

- -Carlos
95 M3  Redline fluids, Type 200, Mobil 1 15W50.

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