I would change it. A lot of people neglect on changing gear oil.
Most manufacturers recommend changing it, mileage varies, check your owners manual.
You can use any SAE certified rear differential fluid in your 1970 Chevrolet. The 1970 Chevrolet differential fluid can be checked from the differential fluid check port.
The rear differential is a part of the power train, not a part of the suspension on a vehicle. It is the suspension system you need to be investigating on your vehicle. You more than likely have a broken spring.
There is no concrete answer. Different vehicles have different needs. For instance, an off-road vehicle may need a differential fluid change as often as every 30,000 miles. A vehicle used for everyday travel may never need a differential fluid change. Some manufactures consider the differential lubed for life and others recommend that it be changed at a set mileage like 100,000 miles. Refer to your owner's manual for when or if yours should be changed.
How do you change the differential (rear) in 2005 Honda CRV
When I changed the fluid in mine it took 3 quarts to fill it up. Also if you have a posi-trac rear end you will need to put in a Posi additive. You can get it at Oreillys or AutoZone. If you don't put in the additive the rear end will make a clunking sound when turning.
You may need differential fluid...check that.
You need to replace the fluid in your rear differential. Use Honda Dual-Pump fluid, available from the stealership.
Rear differential service is necessary to ensure that the lubricating fluid in the differential does not break down. Replacing the fluid can help prevent ware on the gears.
rear differential is low on fluid replace the fluid in the diff. or if that dont work you may have to replace it
Part of the rear end.
For an Acura RDX, B126 indicates that the rear differential fluid needs changed. It is recommended that this fluid be changed every 15,000 miles under normal driving conditions.
Just fill the the rear differential will fuild comes out and your done.