Rear main seal

Bernie Benz b.benz at
Sun Aug 27 23:20:44 EDT 2006

Fiber and cardboard! Are you driving Model TŒs? All modern low pressure
rotary shaft seals are spring loaded nitrile, or a more exotic elastomer.
A stool softner may also work for you.


> From: Peter Schulz <pcschulz at>
> Date: Sun, 27 Aug 2006 22:27:42 -0400
> To: Bernie Benz <b.benz at>, Kneale Brownson <kneale at>
> Cc: 200q20V mailing list <200q20v at>
> Subject: Re: Rear main seal
> Bernie:
> I'm going to call you on this one...
> I can understand that the seal restorer can work
> on the fiber and cardboard type seals, but the
> front and rear crank and cam seals are rubber with a spring.....
> Is the seal restorer also supposed to act as a
> treatment for rubber/vinyl seals?
> -Peter
> At 09:12 PM 8/27/2006, Bernie Benz wrote:
>> Kneale, here¹s ;your expected answer:
>> DFI if IAB! Add a can of engine seal restorer and never have to replace a
>> rotary shaft seal. Tranny and rear end also.
>> Bernie
>>> From: Kneale Brownson <kneale at>
>>> Date: Sun, 27 Aug 2006 16:49:09 -0400
>>> To: 200q20v at
>>> Subject: Rear main seal
>>> I originally planned to replace the rear main seal as part of the throwout
>>> bearing/clutch replacement.  But looking at the Bentley, I'd have to get
>>> some additional new parts, namely new flywheel bolts, new needle bearing,
>>> as well as some more tools I don't have yet.  I see no sign of rear main
>>> seal leakage.  This car has ~130K miles.  Is rear main seal replacement
>>> necessary?

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