Dear friends:

Auto manuals always emphasize the importance of using the correct fluid in the brake system, which is either DOT 3 or DOT 4. They say that putting any other oils (engine oil, ATF, PS etc...), even just a very tiny contamination will destroy a brake system.

Could someone clarify how such a damage will be done if an incorrect fluid is used in the brake system?

Thanks a lot.

Best regards,

Eric