…there is a difference between mechanical locking fidderential and viscous differential. Most passenger vehicles, SUV’s and light trucks are viscous clutch plate type diff’s. Some Audi’s and Subaru’s have mechanical locking differentials. Subaru for instance, depending on model(STi, for example) has a electronic adjustable center diff and 1 each front and aft(3 total). Audi Quattro’s uses Torsen center differentials and some of the transverse mounted engine cars uses Haldex electronic locking diff’s(also found on some VW’s). When locked, it is a true 4WD.
Also maintenance of the diff’s makes a difference as the clutch plates do wear out. Since it is rather expensive to service the diff’s, most owner hardly ever have them service during the life span of ownership.
Isn’t it sad, though, that the examples of REAL WORKING technology (for SUVs) exist on import vehicles? All American SUVs seem to be built for is either bling/chrome or social status.
I own a 2006 Subaru Tribeca with Symetricaly AWD system. Omaha is getting hit with a pretty nasty snow storm today and so I took her out. The roads were not plowed so it was all “driven on” snow. My only concern is when I go into a turn and/or turning lanes I slide. At one turn, where I was taking it easy, her back-end slid and got away from me. I almost went sideways. I have a 2006 Volvo S40 T5 AWD and she does the same thing. They are 2 different AWD systems, however am I driving it wrong?
Note I do not go out flying aroud, and take it pretty easy.
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