The OTC Coolant Re-filler allows a vehicle's coolant to be re-filled without the need to bleed the system, and preventing air locks, caused by air becoming trapped in the system. Air trapped in a pressurized cooling system can inflict major damage on system components, such as water pumps and thermostats. It also prevents the system from operating effectively, resulting in the vehicle overheating.



  • Prevents air locks in coolant system
  • Negates the need to bleed the system
  • Universal adaptor fits any vehicle
  • Built-in vacuum gauge