Quote:
Originally posted by Porter
It is standard procedure at US dealerships to lift the car in the air and run the wheels at low speed to test for center differential problems. The same process occurs during transmission flushes using a circulatory flush system, the vehicle is driven through all the forward gears with the wheels in the air.
If care is taken not to shock-load the drivetrain, there are no adverse results from running a Subaru drivetrain freely while suspended.
All Subaru drivetrains will spin all four wheels when suspended, regardless of initial torque split, i.e. 90/10, 50/50, 45/65, etc.
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Right, and I've seen this done. But that's on a very beefy lift. My point was that it's probably not something you should attempt at home with jackstands. I also had a problem with Sergi recommending that somebody grab a wheel while it's running. Will it tear your arm off? Probably not. But it also won't answer the questions which started this thread.