Considering CRSSDMS's wise advice, I've made some important corrections to:
The 94 B-Car Field Service Manual's Draining & Refilling Procedure:
1. If car is hot, loosen coolant recovery reservoir cap VERY SLOWLY until a slight hiss is heard. When hissing stops, continue loosening cap VERY SLOWLY until a slight hiss is heard again. Repeat until cap is removed.
2. If car is cold, just remove the coolant recovery reservoir cap.
3. Loosen and eventually disconnect the radiator outlet hose at the bottom of the passenger-side of the radiator.
4. Do something to protect the Opti-Spark from the coolant about to issue forth from the air bleeder valve.
5. Open bleeder.
DON'T CLOSE IT YET!
6. Remove both knock sensors on both side of the engine block.
7. Allow system to drain completely.
8. Re-tighten radiator outlet hose.
9. Install knock sensors.
10. SLOWLY fill cooling system through the coolant recovery reservoir, just past the top of the 'FULL COLD' mark.
11. Close bleeder when bubbles disappear, and only coolant is visible.
12. Run engine till thermostat opens.
13. Reopen bleeder.
14. See Step #11.
15. Reinstall coolant recovery reservoir cap.
[16. Experience has shown that steps #11 thru #15 may bear repeating, depending on how thoroughly the system was bled.]
Haven't gotten around to getting one, but the
Enhanced Bleeder Valve
is pretty sweet.