1994 Buick LeSabre Owner's Manual - Page 199
1994 Buick LeSabre Manual
Page 199 highlights
When the coolant in the coolant recovery tank is at or above the "FULL COLD" mark, start your vehicle. If the overheat warning continues, there's one more thing you can try. You can add the proper coolant mix directly to the radiator but be sure the cooling system is cool before you do it. 197
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