Since I can't drain more than 5 quarts of coolant out of my 11+ quart capacity Buick, I am now wondering: how much coolant does an engine need to run successfully? 75% capacity? 50% capacity? I would imagine that air bubbles would start forming at some point...

I can't find this via Google .

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"Senior Luna, your sense of humor is still loco... but we love it, anyway." -rickymay ____ "Your sense of humor is still loco... " -MBeige ____ "Señor Luna, your sense of humor is quite järjetön" -Delibes

1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod

2 Samuel 12:13: "David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die."