What do you put in the cooling system of a 1993 ford explorer can you put water instead of coolant?
I would only put water in an emergency situation where I don't have coolant available. The coolant helps the engine to not overheat and to not freezing, while that could happen if you just use water. If you don't have your vehicle's manual to know the specification of the coolant, you can use the generally available Prestone and add water according to the table on the coolant's recipient. (or you can buy the pre-mixed formula)
To bleed the cooling system on a 1996 Olds Cutlass, locate the bleed valve, which is on the front of the engine above the water pump. After making sure the cooling system is not under pressure, open the valve by turning it counterclockwise. Fill the radiator with coolant until no air comes out the bleed valve, and a stream of coolant begins to flow from there instead. Tighten the valve and close the system to…
Air can get into the cooling system when the coolant is replaced as either part of a maintenance schedule or when the system must be drained for a repair. When the coolant is replaced the coolant system must be "burped" to get any air out of the coolant lines. There are various ways to do this dependant upon the type of vehicle. A repair manual for your vehicle will describe the proper technique.