when talking about wheel seals and grease and all of that, it's useful to also say if you are talking about drive axles, tags or steer axles. Each is different in what it wants and what is needed to work on them. I would think that drive axle seals would or could be replaced any time you have the drum off to do brakes, wouldn't they? Tags and steers I think you can take the drum off without disturbing the wheel seals.brian