If there isn’t any, then the fasteners will be re-tightened accordingly. In the case an oil leakage is found, the rear differential carrier gasket needs replacing, as do the fasteners.

B7 D0 D8 D9 H0 H9 Any incorrect or degraded rear axle fluid (or differential gear oil) should be replaced with the correct oil, specifically SAE80W-90 GL-5, SAE90 GL-5.

Here are the tools you’ll need to change your rear differential fluid. Socket and wretch, a catch can, break clean, gloves, glasses, gear oil, torque wrench, and a pump.

On Ford F-150s, the transfer case and front differential oil (as well as the rear differential oil) should be changed every 150,000 miles.

04.Since rear-differential fluid doesn’t get changed too often unless you’re the kind of guy who blows through ring-and-pinion sets, we prefer to add nice synthetic gear oil like Royal Purple ...

The Fix: Dealers will inspect the rear axle oil level, and rear axles with an insufficient amount of oil will be replaced for free. What Owners Should Do: Ram parent company Fiat Chrysler ...

Honda Technical Service Bulletin #04-040, dated August 2008, identifies a potential "noise or judder" from the rear differential when turning due to clutch debris contamination in the fluid.