"Figure 8's" After Rear Diff. Fluid Change??
Thread Starter
Melting Slicks
Joined: Jun 1999
Posts: 2,263
Likes: 48
From: NJ
"Figure 8's" After Rear Diff. Fluid Change??
Is it necessary to do figure 8's after changing rear end diff fluid? i read this somewhere, but so long as the diff is already broken in, i don't really see why it would be necessary.
Former Vendor
Joined: Apr 2001
Posts: 10,976
Likes: 21
From: FL
St. Jude Donor '13
Re: "Figure 8's" After Rear Diff. Fluid Change?? (LIGHTNING)
The figure 8's are to get the friction modifier additive up into the posi clutch plates to prevent the groan noise when turning :yesnod:
Burning Brakes
Joined: Aug 2000
Posts: 1,132
Likes: 1
From: Morganton, NC, USA
Re: "Figure 8's" After Rear Diff. Fluid Change?? (Brutus0725)
If you are just changing differential lube for preventive maintainance reasons and your positraction wasn't chattering, you probably do not need to immeadiately work the new lube and additive between the clutches. It will distribute there eventually. I've read that a different additive is used by Red Line and Amsoll in their synthetic gear lubes than GM uses in there dino gear lube. :yesnod:
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