Hydraulic brakes accidentally oiled Please help me. When I'm using my hydraulic brake I hear a weird sound. I think putting oil on it will cure the problem but I guess it just come out worse. After putting oil my brakes they are not working. How can I fix this?
Braking surfaces (pads, rims, rotors) must never be lubricated in any way. Doing so can severely affect braking performance and is dangerous.

You can clean the rotor with isopropyl alcohol or mineral spirits.

The pads will probably have to be replaced as oil permeates into the pad material. You might be able to save them by cleaning with alcohol and sanding off the top layer, but replacement is the safest option.