Originally Posted by Thumper SRT6
From the SRT6 service manual:
DESCRIPTION - DIFFERENTIAL LUBRICANT
Note: Refer to the Owner’s Manual for the recommended differential lubricant change intervals for this axle.
Use synthetic SAE 75W-85 axle lubricant that meets MB 231.1, such as Mopar 05126035AA. An SAE 80W-90 GL-5/MIL-2105-E Synthetic Axle Lubricant may be substituted. Reduced axle durability may result if an unapproved product is used.
I looked through the owner's manual and it does not state any change interval.
Thumper, thank you! Now if you could just provide the specified amount of fluid required... I know I know you have already done enough! Anyone else?