Quote:
Originally Posted by TheMidnightNarwhal
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.
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What do you mean by “coated rotors”? Some rotors are coated but not all. Do you have a link to where the rotors were purchased? Rotor manufacturer /brand? Perhaps the product description will shed some light on what’s going on.
So these pictures were taken after trying a brake cleaning spray?
If the holes were drilled in after the rotor was cast, it’s possible it’s from the drilling process with a cooling fluid being used. It seems like it all starts with the holes.