I have a 99 rwd astro with 150K. The wife is hearing noise she says it sounds like the rear end and she is better than most at identifying problems. Our last van was a 95 rwd astro and I remember replacing the universals and rear end. A good mech I know told me something about these rears and I wonder, Is it true that "the rear axle bearings use the axle housing as a race for the bearing and that the housings wear"??? When I get a day off I'm going to pull the cover off the differential and change the gear lube. The preferred lubricant for the rear is 90W gear oil??? I also read another thread about a friction modifier additive so I'm a little confused. Are there any synthetic options that work well???
Thanks in advance
Thanks in advance