Dealer agreed to change my front and rear diff oil for free due my vehicle being in the shop for 25 days. Thought I read somewhere that nissan was putting the 75-140 synthetic in them now due to issues. They put nissan recommened 75(or 80) 90 non synthetic in mine. Anyone familar with this?

Thanks

75-90 in the front; 75-140 in the rear.

I've seen posts that state the specification changed to synthetic 75W-140 for both. I loaded front and rear with the same.

Understand everyone is putting 140 in the rear, but is nissan doing it on the 04's? Is there a TSB or anything stating this.

Thanks

Todd