Using this Killer B Dual Oil Sender Adapter is easy. First, make sure your vehicle is the 2015 - 2021 Subaru WRX or 2014 - 2017 Forester XT with the FA20 engine. Then, install the adapter following the standard procedures for oil sender adapters. When using, keep an eye on your oil pressure readings to ensure everything is working properly. For maintenance, check the adapter regularly for any signs of leaks or damage. If you notice any issues, replace it as soon as possible to keep your engine running smoothly.