Sealey VS0042 cooling system vacuum purge & refill kitSealey VS0042 cooling system vacuum purge & refill kit Dramatically reduces cooling system refill time, without mess and without introducing air locks. No more time consuming cooling system bleeding and no more messy spills to clean up. Simply plug into the workshop air line, attach to the cooling system header tank and create a vacuum. Complete the process by attaching the filler hose and opening the valve allowing your premixed coolant to flow into