Well i learned the hard way. Up here in Minnesota the temp got to -5 last night, and i guess i have to much water in my antifreeze from replaceing the water pump this last spring. My Caddy is now froze up like a ice cube I am just hoping i didnt crack my block, or split my radiator. Well i have it in the garage now (after moving the supra and tons of engine parts:cry: ) with blankets over the engine and the heater on hi.