Methyl alcohol - available in jugs at Home Depot in paint section. But it evaporates like crazy.

I wash out the brakes with dish detergent and water, then dunk and reassemble them in clean brake fluid that will absorb the water and lubricate.

Re: Bench bleeding. Brake fluid is cheap enough. Why bother hooking up tubes to recycle expelled fluid to reservoir?

Wear safety glasses. Fill reservoir with fluid. Push piston (air then fluid is expelled into rag), block ports with fingers (to stop air from being sucked back in) and release piston (fluid replenished from reservoir).

On installation into car: with pressure bleeder working, crack open lines at m/c so some fluid squirts out, then tighten.
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1980 245 Canadian B21A with SU carb but electronic ignition and M46 trans in Brampton, Ont.