This might be a dumb question but here it goes.
I am changing out my front u-joints for the first time. When I pulled the front axle out, I noticed that the axle tube is packed full of dirt. Is there a good way to clean it out? I don't want to push all the crud into the oil seal or the differential when I put the axle back in.
Also, Is it good practice to change the differential fluid after having the axles out?