Axle oil fill plug

They don't turn.
They were never designed to do serious mileage looking at the plain bush bearings used on the front driveshafts at the hub end. :whistle:

the prop and inside may not turn but the bearings still need oil regaurdless. The bearings at the end of the axle tubes n such if there is no oil you still have the heat coming off the hubs n brakes that tranfers to your axle tubes. The oil reguardless if the inner shafts turn help keep heat transfer to a minimum

Our 2006 Jimny rear axle fill plug was stuck and not coming out, using the wrong size of 3/8” square drive. 15 seconds of heating it with a small gas torch, and the plug came out easily. The thread was ok, it was the nylon sealing washer deformed into axle rust on the casing that held it tight. As I said, a little heat and the plug comes out easily, and the white nylon sealing washer was not damaged, so ok to reuse. I finally found my 8mm/10mm square socket key, what a difference, a perfect tight fit, unlike the 3/8” one. Luckily the axle plugs are easy to get, but any M20 x 1.5mm thread pitch plug will do, just make sure they are not too long, and go too far inside the axle casing.