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Re: VW synchro vs 4000Q

:>VW-style viscous coupling all-wheel drive system.

>if the above is correct, than the system is "part time all wheel drive", a
>rather significant departure from the "all time all wheel drive"....

The presence of a viscous coupler in an all wheel drive system doesn't 
automatically relegate it to "part time all wheel drive". It depends on 
how the torque is split front to back. Many viscous systems are split 
50/50, while some (VW synchro Vanagons) are split 10/90 under normal 
conditions. A 50/50 system is definitely full time all wheel drive.