As seen on Two Guys Garage on the SPEED channel: When doing a brake job it's important to keep the many brake surfaces and components clean. CRC BRAKLEEN Brake Parts Cleaner chlorinated formula in the red can is the strongest available to remove brake dust, road grime, and grease. Use CRC BRAKLEEN on the caliper assembly and bolts and on the new rotor before you install to get rid of the protective oil used for shipping. CRC BRAKLEEN is available in 6 different formulas to meet different state requirements.