Quote:
Originally Posted by M3SQRD
New brake rotors are often covered with an anti-rusting “oil” to prevent the iron in the rotor from rusting before use. It appears it either wasn’t uniformly applied or it’s worn away with time. You should use something like Brakleen (brake clean spray) before using the rotors. I find it extremely odd that the rotors were all delivered in one box without each rotor being in its own box. Where did you order these from?
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I didn't think coated rotors were oil filmed. But yeah I did try brake clean and it did not wipe away. Seems like it's part of the coating or the material?
Oh just to clarify, 2 of these pictures are the same rotor and the third one is one of the rotor that are good. They both came in their own boxes.