[lincpimp]

Good old brake cleaner(aerosol) from the auto parts store, it works just like nitro clean. It also has a tube that you can direct the blast. I use a small stainless screen cup to hold the gears and blast the brake cleaner into it. That keeps the parts from getting lost. A kitchen store had these screens with handles, or walmart may have them. The brake cleaner is about 2 bucks a can and will do about 6 diffs. Alot faster than rags or soaking IMO.