7. (Optional Step) Now is a great time to use the coolant system flush to dissolve and clean out any remaining rust, dirt, and other containments before filling the system with coolant again. Read and follow the instructions included on the flush solvent to properly do this.
8. Fill the reservoir with a 50/50 mixture of coolant and water. You may also want to include a coolant additive such as Lucas Super Coolant Additive or Mishimoto Liquid Chill Radiator Coolant Additive to further enhance and protect your engine cooling. Fill to the top of the reservoir with your coolant mixture and then start your engine. Let it run until the engine has reached normal running temperatures (can be seen on the temp gauge of the dashboard). Once the engine is hot, top off the reservoir to ensure that it’s full. Replace the radiator cap and ensure that’s it’s tightened until it clicks at least twice. Be careful while the engine is hot. The new chrome pipes do get hotter than your old rubber hoses. You can easily burn your arm or hands once the engine is at temperature.
9. Let your Mustang run for about 15 minutes or so and watch for any leaks from the hoses or the thermostat housing. Continue watching the areas around the blue silicone hose connectors over the next couple days when the car engine is cool for any seepage. If a clamp is loose, it may not leak when hot, but as I found, it can leak when it has sat cool for a while. They key is to watch. Once you’ve had them installed for a few days, if there’s no leakage, you should be ready to go, and looking good when you do!
As you can see below, these pipes look great and do a great job of keeping your pony reliably cool. The BBK Cold Air Intake kit especially looks good with these chromed radiator hoses.