Csnow, was it my post that needed clarification? I didn't intend for the person to walk away from the car until the master cylinder ran dry. Gravity bleeding is helpful to develop good pressure and flow for subsequent two-man bleeding. One won't get good pressure with a high volume of air in the system because of the difference in compressibility between air and fluid. I'm also not sure if this would work on an ABS system.

Good tip on blocking flow at the master cylinder. I may need to use that trick some time.

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95 E320 Cabriolet, 159K