I have 17k on my car and the rear end is grinding if I travel over 60 miles. When I turn, not on the hwy so I know it's the differential.

I have researched the issue and members say go with synthetic fluids in the diff.

My local dealer wanted to have my car for the whole day just to diagnose the issue though. Have many of you had this issue? I find it really disturbing on a car with 17k miles(2005). I've changed the oil every 3k, new plugs, new trans fluid at 15k. I've only been noticing the issue lately because I've driven more then 12 miles :P(my normal commute)

I think it's just the hassle of bringing the car in that's making me mad.

Just take it in? Or is there a bigger concern?

NH

ps. The local tech irk'd the #$@# outta me "Maybe the fluid is low?" It's under the $@#$ car, how do I check it exactly?!?!?!?

 

what do you mean by grinding? Audible noise? Vibration?

 

You cant really *check* it, what can you do is try to look for trails of leak around, oh also try to open the fill hole and put fluid in, if it *accepts* alot of fluid without any overfilling, meaning nothing comes out of the fill hole for a long time, then u're low on fluid.

and what exactly do you mean by grinding ? how would you know that its grinding ?

 

It happens to everyone. Just change out the diff fluid with fresh synthetic gear oil, and the problem will go away.

 

uh,

no.

there have been a few bad diffs out there... changing the fluid will not make it go away..

you are under warranty, let them fix it.

beers