I'm NOT in Arizona; I'm in a suburb of St. Louis, MO; but it was a heat index of 102 yesterday. My garage is NOT air conditioned. I did a front pad slap; had less than 1/8" remaining on pads, I considered pad slap necessary for safe driving...then I got on my spreadsheet where I keep track of maintenance and noticed my brake fluid was last (power bled) almost 3 years 62K ago. It's too hot and I'm too lazy to jack up all 4 corners, remove wheels, hook up the Motive bleeder and go around the car twice to all 4 corners so I just used a syringe, flexible tubing and a couple 600 ml beakers. I vacuumed the master cylinder all but dry; removed 450 ml fluid and replaced 450 ml fluid. My question (which I feel only experience can answer) is; what is capacity of the total system? What percentage of total fluid did I remove? I know several places I CAN'T find the answer; I have a GM factory service manual for the 2003 Lesabre, page 0-30 maintenance and lubrication specs does NOT list BRAKE fluid capacity.