2005 Fleetwood Fiesta 32S Rear Differential

[Doogie75]

Good Afternoon All, I have a grinding/Whining noise coming from the rear diff area. The noise is only heard when pressing on the gas pedal. If I take my foot off the gas, the noise stops.
My mechanic said that it was the rear differential when he took it for a ride with me.
I wanted to shop around for a replacement or a rebuild and everyone asks me what type of rear end do I have.
I looked at the rear end and it has a completely round rear diff cover with the fill plug in the senter of the cover.
Anyone have an idea what make and model number do I have and if anyone else has experienced issues with their rear end.
Thanks in advance and have a great day
Oh...... its built on a 2004 Ford F53 Chassis Triton V10 Axle Code 95

[OuttaMyWay]

Before you invest in a new punkin', I would give the ujoints a good looking at. while whining is not generally a symptom, they do tend to make noise under power when they are bad. It is a lot cheaper to change them out than the diff and also more likely to go bad in any vehicle than the gears in the back.

[twinboat]

Pull the drain plug or lower bolt on the differential .

Look at the oil coming out for gray material or metal pieces in it.

Did he rule out the center support bearing on the driveshaft ?