This is a relatively new process that helps prevent the failure of seals and gaskets inside the power steering pump and steering rack. In the past, power steering fluid was not a concern and typically lasted the life of the vehicle. Today, power steering fluid deteriorates much sooner due to significantly higher operating temperatures and pressures. Fluid deterioration can be credited with an estimated 300% increase in power steering repairs over the past fifteen years. Power steering flushing prevents most expensive power steering failures.