think i'm kinda late changing it then lol is their a good how to you follow?

 

according to dealers recommendations, the differential oil should be changed with the ATM oil at the same time & thats mean every 25000 miles. regarding flushing, I dnt have an idea. already today I dropped my car at the dealer to change both oils

 

I dont think mines ever been changed..... but what are the symptoms of a bad differential?

 

as I know, the bad differential will start to be noisy. ask AJ or I dunno what is his name, he is professional in flushing the tranny & differential as well as changing the oil

 

25k seems too frequent I think. I don't think it needs to be changed that much, but that's just me. You flush fluids as part of maintenance for a car. Some people don't even do it at all, so if you are, you're doing the car a favor. If you asked me (and I could be completely wrong) I would flush the diff and tranny every 60k. The signs of a bad rear end is usually a howling sound from the rear.

 

Oh and no matter what you do, always use OEM (or good quality) fluids. I'm putting Nissan fluids in my car for everything.