Oil for Differential

[jimnance]

Was having my Dodge serviced and wanted the diff serviced. They said that the synthetic fluid was better than the GL-5 in the service manual. They talked me into it along with a pint of the friction modifier for the limited slip clutches.



Now I get chatter from the rear diff every time I go around a turn. Could the synthetic be the problem, or do I just need more friction modifier?

 

[bgilbert]

Most likely not enough friction modifier. Take it back and have them drain enough to add another bottle of additive.