Re: Torsens and recovery...

["Michael W. Estrin" <estrin@ibm.net>]

>By locking the diff, you guarantee the torque split will ALWAYS be 50/50,
>regardless of how much traction is available to each of the tires.  This
>means you will always have at least 1WD (one front or one rear wheel!)
>instead of 0WD; with the rear diff also locked, you have 2WD and only very
>rarely do you ever have 3-4WD.  A Torsen center diff guarantees that you
>always have at least 1WD and with the rear diff also locked, you have 3WD,
>although under extreme conditions, one end of the car gets only 22% of the
>available torque ... when it comes to getting unstuck in mud or snow, this
>is about the same as zero.  That's why Audi still includes the rear diff
>lock on all of its quattros...

I've a 1998 Audi A4 2.8 Quatto.. ..can't find that rear diff lock switch
anywhere.  Should I feel cheated?  ;)