Here is more information about brake fluids
StopTech : Balanced Brake Upgrades and a how-to
Lone Star Mini Club Forums - Brake Fluid Flush
Two liters will do a thorough flush and one liter is good enough for a bleed. Something I don’t mention in the how-to is gravity bleed. After the first bleed I wait a half hour and perform a second bleed, then I give the calipers a few taps with a nylon ratchet handle, wait a while, and perform gravity bleed (non-pressurized) to finish. Use all of the fluid because it can’t be saved for later.