Using this oil cooler kit is easy. First, make sure your engine is cool before starting the installation. Locate the old oil cooler in your 2003 - 2007 Ford F - Series with a 6.0L Powerstroke engine and carefully remove it. Then, install the new PPE oil cooler from the kit, making sure to use the included Viton O - ring and gasket set. Double - check all connections to ensure there are no leaks. As for maintenance, regularly check the oil level and the condition of the cooler. If you notice any signs of damage or reduced performance, it might be time to replace the cooler. Also, follow your vehicle's regular oil change schedule to keep the system in top shape.