I have a modern dana 60 to get cleaned up and ready for swapping under my truck. It is dirty and has some surface rust just like every other axle out there. What's the best way to get it ready for paint (without breaking the axle down)? I could borrow a power washer, and use a wire brush, but are there any products/chemicals that would make this job easier/better? Is there anything I need to be careful of when power washing? Thanks!