I have 6000 miles on my 03. Should I change the read end fluid or leave it. Would there any increase in preformance if I did. If so, what fluid should I use?
I wouldn't mess with it yet. It is a sealed unit. unless you have already changed out your diff cover, and have a drain plug. is that already recommended for your car?
Leave it alone unless you have some other reason to open it up or are just really paranoid. If you end up changing it, you might as well do something useful while you're down there, like a set of 4.30s.