Srvnee Steps: 1 Install the correct size adapter to make sure there is no leakage. Place gasket downward. 2. Your car should be turned off, dont start the car yet! Fill the coolant funnel to about 1/3 full. So when the system is crushed, the liquid will fall into the system instead of more air. Go to the car and set the temperature regulator (or heat setting) to high temperature, but make sure the fan/heater is turned "OFF". 4 Now start your car and let it idle for a while until it is warm enough to open the thermostat and turn the fan on. After waiting, make sure that the thermostat opens and cools the engine and the coolant level will decrease and a lot of bubbles will be produced from several pieces. This is the trapped air that escapes from your cooling system. 5 If there are bubbles after normal time operation, please check the overflow tank to make sure the coolant is inside. 6 The fluid surface must be lower when driving the engine. Keeps RPM in idle position (If you realize that the liquid is overrised, it will stop the engine. Wait for the liquid to drop down, then start the engine. 7. Once the foam stops, use the liquid stopper to the liquid remaining within the funnel 8. Finish Color: Black + Yellow + Transparent Material: Plastic + Metal Package Contents: 1 set x Splashproof Coolant Fill Kit Package contents above and other products are not included here. Note: The color and size of the actual item may vary slightly from the color and size on the website due to lighting and display conditions. The margin of error for the measurement is 0.4 - 1.2 inches (1