Mike, that's probably going overboard..........since filling the rear reservoir is such a PITA...........IIRC you safely get about 10 pedal presses before it's near the bottom.

Additionally, due to the trapped air, it's much easier to fill it from 1/4 full to 3/4 full than from 3/4 full to the top.

With two leaking rear calipers..........at different points in time...........and a third leak on the brake hose fitting............I've probably run three quarts through that reservoir.............

On some days, I'd get in the vehicle...........ready to go to CT (150 mi.) and get that sickening feeling of 1/2 a brake pedal..........and I'd know that the rear reservoir was empty........yet again..........really sucks to drive that far with only one system operating.