Using your Noble Carbon Fiber Fuel Tank Cap Cover is easy. First, make sure your car is one of the compatible models like Subaru WRX, BRZ, Toyota 86 / GR86, or Scion FR - S. When it's time to install, pick a day with 75 - 95 degree weather. Clean the area where you'll stick the cap cover well, getting rid of dust, dirt, wax, or any fresh ceramic coating. Test fit the product to see how it looks. Then, remove the protective backing from the 3M and firmly press the whole piece down. Wait 24 hours for a good bond and 72 hours for a complete bond. As for maintenance, just keep it clean with a soft cloth. Avoid using harsh chemicals that could damage the glossy finish. If you notice any issues within a year, it's covered by the manufacturer's warranty.