Black Audi A3 TDi

[Wells]

@ David, I left if for about 5 minutes, it had gone purple, but had not dried yet, it was a cool drizzly day, so I figured I had extra dwell time, I only apply to 2 wheels at a time, so I sprayed right side front then back, then brush and rinse front, then back, then go to left and repeat process.

@ LC, I never had an issue on painted calipers, well the 4 or 5 I have cleaned so far , could it be Audi specific? was it your S3 that was affected?