Best way to prep new parts for paint?

[Keystone_Hate]

I have new brake drums and spindles and they are covered in the packaging oil to prevent corrosion. The metal itself is coarse because it's cast. So i'm not sure on the best way to clean these before painting. I don't wanna use a rag and degreaser cause the coarse metal is gonna hang on to all the lint. Can I just hose em real good with brake cleaner? Or possibly use a brush and hot water and plain hand soap? I'm worried about flash rust if I try the soap and water.