Original post by: Jack Callis ,
It sounds like the ring and/ or pinion are going south. If it were bearings, you would probably hear/ feel it. I see you are going to drive it as is..if so, keep a very close eye on it as once the gears start flaking they don't stop and the metal will ruin the bearings. If it goes too far, you will end up on the side of the road somewhere. I also have no experience with the Micro blue, so can't help with that.