I'm getting a new tire installed on my 81. I removed the rear wheel and took it into my local Honda shop. They had to order me in a tire and when it arrives they will mount it. While I have the rear drive apart I thought I would clean out the old grease from the drive splines. The splines all look good with no signes of rounding or wear. The old grease looks OK but it's hard to get out of all the little grooves. Can anyone suggest a remover that would be safe? I saw on another site someone mentioned disk brake cleaner but I wasn't sure if that was a good idea or not. I do have the recommended Moly grease to repack. Any suggestions would be appreciated. Thanks.