[AT44]

Hello,

I was thinking about changing my differential fluids. Does anyone have any idea if the newest GMC 2500 gassers come with synthetic or a better gear oil mobile one synthetic?

 

[gmc00z]

why the change on such a new vehicle? If it's leaking, bring it to the dealer.

 

[Graystone]

Wait to the first service. Otherwise you are not gaining anything

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[gmc00z]

Also, check your manual. Should have service intervals for all fluids.