Do I need to break in a new differential at all? Just rebuilt my rear end and wasn't sure
New differential break in?
- Thread starter xxjaymanzxx
- Start date
I just drive easy to listen for noises ( highway speed, cruise, deceleration, acceleration and turns) and its good, make sure you put the friction modifier in for the clutches also
The instructions usually list a break-in procedure. Some brands will have you drive in a figure 8 for a while, then change the fluid again immediately.
OP, did you install new gears or re-use your old set?
New gears, clutches and bearings:
- first 100 miles
- friction modifier
- low speed / light loads
- low speed figure-eights
- change differential fluid
- 500 miles
- friction modifier
- change differential fluid
- change fluid annually or how you see fit
New clutches and bearings (re-used old gear set):
- friction modifier
- low speed figure-eights
- change fluid annually or how you see fit
This is my opinion, I'm sure others may feel differently.
Good luck!
New gears, clutches and bearings:
- first 100 miles
- friction modifier
- low speed / light loads
- low speed figure-eights
- change differential fluid
- 500 miles
- friction modifier
- change differential fluid
- change fluid annually or how you see fit
New clutches and bearings (re-used old gear set):
- friction modifier
- low speed figure-eights
- change fluid annually or how you see fit
This is my opinion, I'm sure others may feel differently.
Good luck!
I have always done the drive 30 minutes and then let it cool. Rinse and repeat a few times and it's solid
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