1994 Chevrolet S10 Pickup Owner's Manual - Page 197

How to Add Coolant to the Coolant Recovery Tank If you haven't found a problem yet, but the coolant level at or above isn't the ADD mark, add a 50/50 mixture of clean water (preferably distilled) and a proper antifreeze the coolant recovery tank. (See "Engine Coolant" in at the Indexfor more information about proper coolant mix.) the I NOTICE: In cold weather, water can freeqe and crack the engine, radiator, heater core and other parts. Use the recommended coolant. When the coolantin the coolant recovery tank at or above the is ADD 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 the radiator, but be sure the to cooling systemis cool before you do it. 5-15