Abstract: The method of flushing a vehicle power steering apparatus enclosure that contains first pressure fluid includes providing a container having a first zone for reception of a predetermined quantity of flushing liquid, and having a second fluid pressure zone, the container having an inlet for filling flushing liquid into the first zone; providing a pusher in the container to extend between such zones; connecting flushing liquid delivery apparatus with the container to receive pressurized flushing liquid displaced under pressure from the first zone in response to movement of the pusher; connecting a vehicle power steering apparatus enclosure with the delivery apparatus to receive pressurized flushing liquid to flush the steering apparatus; and connecting a source of fluid pressure with the second zone for pressurally displacing the pusher toward the first zone to pressurize the flushing liquid, expelling a predetermined quantity thereof to the delivery apparatus and to the power steering apparatus, for flushing s