I noticed a very slight 'grrrrr' on acceleration in the '99. Decided I'd try and grease the u-joints to see if that would take care of it. Did the rear driveshaft first, all went well. Didn't take much grease at all to get them full. Went to the front and realized I'd have to take off the plastic splash guard to get access to the front u-joint. That very front u-joint actually took 3 times more grease to fill than the others leading me to believe that the dealership that maintained this 40k mile Cruiser probably had never greased that very front u-joint. The 'grrrr' went away and all is well. We 'heart' our 100 series!!!