brake rotor cleaning

[MARK928S]

need help in cleaning rotors on a porsche 928.stains on surface

[Jimmie]

If you're talking about the orangeish stains they are usually caused by a wheel cleaner that has a little more acidic ph. That reacts with the metal in the brake dust and causes rust (overnight). I wouldn't rub too much on the rotors. My experience is continued use of a really good wheel cleaner and it will go away. I use P21S and DP both gel form. No more orange rotors. I hope that is the type of stain that you're talking about.

[AudiTTman]

Would the P21S mess up painted calipers?? I really loved my red ones and id hate to have faded pinks ones lol

[ASPHALT ROCKET]

Would the P21S mess up painted calipers?? I really loved my red ones and id hate to have faded pinks ones lol

No it will not.

[MARK928S]

i use p21s gel but still get stains on the rotor's

[Emile]

Do you have a picture for us?

Usually after you have cleaned the vehicle and the wheels, the stains will form. Driving the vehicle up to 30mph and then coming to a stop will clean everything up. The rust-looking stuff that forms is only temporary.

[MARK928S]

i would love to drive the car but there is too much salt and cinders on the ground now but i will take notice if it is gone the next time i drive it. thanks for the info