Does the differential Fluid Viscosity Affect LSD Action ?

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02-04-2012, 03:54 PM

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zeroptzero

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Quote:

Originally Posted by B0neSt0ck

Quote:

Originally Posted by robrob' timestamp='1313757025' post='20893379

Quote:

I doubt the oil viscosity has any impact on the gears of the Torsen unit. The spider gears physically displace to create the locking action.

This was my initial reaction but I ran Redline Heavy Shockproof for a year and it "seemed" like I got more inside rear wheel spin when I changed to Mobile 1 differential oil. So it's possible a heavier oil may slow or decrease the opening of the Torsen unit.

I just did a change from redline shockproof to mobil 75w140 recently also. I do not track my car, but i did notice while taking some turns that I pass by on a daily basis, the rear end does feel different with the new oil. It almost feels like the rear end wants to break loose a little more easily.....should this be the case?

The sensation isn't really the rear end breaking loose, it is the car moving to understeer while accelerating in a corner/curve, letting off the accelerator the car moves away from understeer and perhaps back to oversteer depending on you suspension/alignment/tire settings.