1994 Chevrolet S10 Pickup Owner's Manual - Page 242

I NOTICE: If you use an improper coolantmix, your engine could overheat and be badly damaged. The repaircost wouldn't be covered by mix your warranty.Too much water in the can freeze and crack the engine, radiator, heater core and other parts. Some conditions, such as air trapped in the cooling system, can affect the coolant level in the radiator. Check the coolant level when the is cold engine and foilow the steps under "Adding Coolant" the proper way to add for coolant. If you have to add coolant more than four times a year,your dealer have check your cooling system. I NOTICE: If you use the propercoolant, you don't have to add extra inhibitors or additives which claim to improve the system. These can be harmful. Adding Coolant To Check Coolant When your engineis cold, the coolant level should be at "ADD," or a little higher. When your engine warm, the level should be up "FULL HOT," is to or alittle higher. To Add Coolant I If you need more coolant, add the proper mix at the coolant recovery tank. 6-24