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Cooling System Pressure Test & Refill Kit
This is a multi-use kit that is a "must have" for testing and filling cooling systems. If you do not have this kit then you will risk overheating a new engine at start up. Checking the cooling system for leaks and filling the cooling system without creating air pockets is the purpose of this kit.
First you must draw a vacuum to check for leaks on the cooling system before adding coolant. The vacuum also removes all air from your cooling system. As you open the valve to allow coolant to enter it replaces the vacuum with coolant. This prevents air pockets from forming in your engine.
Once the vacuum is totally gone and the system is very close to being full. Top off the system and you are done.