I got home and drained my differential oil but to my shock and relief there was no dirt in the housing??? I wonder why? if the axles were full of dirt when the so called mechanic put them back in I thought there was gonna be a bunch of dirt in the housing, I'm just really glad there wasn't any but now I have to get the axles off and clean them before I do get any dirt in my housing any tips on how to clean the axles and why didn't the dirt get in the housing? thanks again all of you guys that responded. LOVE MY GREEN GIANT!!!