I noticed while I was changing the front differential fluid, that the drivers side axle shaft where it connects to the differential, has a lot of loose play compared to the passenger side. It has at least 1/8 inch of free movement by just pushing it up/down or front/rear by hand. Is this a NORMAL amount of free play? I will be at the dealer for front brake squeal repairs and will have them inspect this also but wanted to be prepared with info from this forum's vast knowledge base. Other details: current milage 25,000... no lift...fluid was VERY grey and lots of particles on drain plug magnet when fluid changed at 20,000... No noise or any symptoms.