You need a brake hone and a drill to use it in. You can use anything to lubricate when you hone, but use brake cleaner after that. To finish, soap and water is best for getting any remaining grit. Blow dry quickly. After you hone look for pitting. If you aren't sure about a spot, use a dental pick to run over it and see how deep the pit is. To me, no pitting is acceptable, but others may disagree.