Rear axel noise

[Lynnii2]

Hello,

I have a 2010 Ford Expedition 2wd with 237,210 miles i change the rear differential fluid every 2 yrs and add the Genuine Ford Fluid Friction Modifier. I wanted to know if someone can point me in the right direction to fix this noise coming from the rear drive axel/rear differential on the driver side. If I put the truck in rear and with lite acceleration is a cracking noise. I have uploaded a video to see and hear the noise.

Rear axel/ Rear differential noise

Discover the magic of the internet at Imgur, a community powered entertainment destination. Lift your spirits with funny jokes, trending memes, entertaining gifs, inspiring stories, viral videos, and so much more from users like 906lane2.

imgur.com

 

[Trainmaster]

The creaking doesn't sound like any differential noise. Suspension maybe. Bushings?

ANd why are you using friction modifier?

 

[Lynnii2]

That was my first thought that it was worn out rear suspension parts too. When I bought the truck the dealership always add a friction modifier to the differential fluid change and said it wouldn't hurt to add it. Once the warranty was up I still add a bottle every 2 yrs when I changed the fluid.

I just ordered all new rear suspension parts from Rockauto.com and should be here this Tuesday. I will be taking it tomorrow to have it checked out by a local differential shop to make sure. I did lift the rear end up on jack stands and still had the same sound coming from the driver side.