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      12-14-2011, 06:17 PM   #36

Drives: '08 135/ '11 1M
Join Date: Oct 2007
Location: at Death Valley 127

iTrader: (1)

Originally Posted by flzrider View Post
How did you get your VPC service records? I haven't been able to get mine yet.
PM sent

Originally Posted by Dackelone View Post
Actually... I think the +FM is more slippery (than SAF-XJ) - to allow for more slip and less noise from the diff's clutch discs.

Thanks I couldnt decide if it was increasing or decreasing the friction. I dont know how more or less slip than intended affects the workings of the diff.


I just looked up one example of a friction modifier for differential use and it states "Limited-slip or Positraction units use plates or clutches to provide the proper amount of lock-up to the differential. Slippery lubricants are required to prevent chatter, but too much slipperiness causes excess wheel spin, reducing traction.
For perfect traction, use Red Line 75W90NS and add the Red Line Limited-Slip Differential Friction-Modifier / Break-In Additive until the chatter disappears."

Last edited by Papethova; 12-14-2011 at 06:26 PM..