* Damage to seals and hoses: Brake fluid attacks many of the rubber components found in power steering systems, causing them to swell, leak, and fail.
* Corrosion: Brake fluid is highly corrosive and will damage metal parts within the power steering system.
* System failure: The incompatible fluid will prevent the power steering system from functioning correctly, potentially leading to a complete failure.
In short, using brake fluid in a power steering system is a very bad idea and can lead to expensive repairs. Always use the correct fluid specified by your vehicle's manufacturer.