Rear Diff Break-In
Thread Starter
Burning Brakes
Joined: Sep 2008
Posts: 826
Likes: 12
From: Phoenix, AZ
Rear Diff Break-In
Hello,
I searched the forums and I am still not clear. It is a 3.90 Quaife from RPM. They states 3 heat cycles consistin of driving for 30 minutes at varying speed. They said then it is ready to go. They said I do not even have to change the oil. The not chnaging the oil really concerns me.
I would appreciate any help.
I searched the forums and I am still not clear. It is a 3.90 Quaife from RPM. They states 3 heat cycles consistin of driving for 30 minutes at varying speed. They said then it is ready to go. They said I do not even have to change the oil. The not chnaging the oil really concerns me.
I would appreciate any help.
Melting Slicks
Joined: Jan 2004
Posts: 3,012
Likes: 15
From: Jensen Beach FL
When I got my 4:10's new from DTE they said to drive under 50 mph and keep rpms under 3K for 500 miles then change the fluid. No sudden take offs. Most differential builders recommend similar same break-in procedures.
Tech Contributor
Joined: Jan 2004
Posts: 20,030
Likes: 289
From: Wylie TX --> Less is More, except under the hood !
You should be doing some figure 8's in parking lots too to break in the oil into the rear end clutch packs. I heard not doing this will cause rear end gear whine.... Just what I heard. When I changed the fluid in my rear end I did multiple figure 8's to get the fluids into the rear end clutch packs. No issues with gear whine here.
Verify with the manufacturer also.
Toque
Verify with the manufacturer also.
Toque
Racer
Joined: Oct 2010
Posts: 302
Likes: 2
From: Baton Rouge LA
You should be doing some figure 8's in parking lots too to break in the oil into the rear end clutch packs. I heard not doing this will cause rear end gear whine.... Just what I heard. When I changed the fluid in my rear end I did multiple figure 8's to get the fluids into the rear end clutch packs. No issues with gear whine here.
Verify with the manufacturer also.
Toque
Verify with the manufacturer also.
Toque
It's a Quaife. No clutch packs.
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
I did the same with my DTE. Their instructions and warranty were very specific to break-in.
