Using this Mishimoto oil cooler kit is easy. First, make sure your car's engine is cool before installation. Follow the included instructions to fit the kit directly into your 03 - 09 Nissan 350Z or 03 - 07 Infiniti G35 Coupe. It's designed to work with both manual and automatic transmissions. When it comes to daily use, if you've chosen the optional thermostatic sandwich plate, it'll help your car warm up safely. Just start your engine as normal. As for maintenance, regularly check the oil cooler for any signs of leaks or damage. Keep the cooler clean from dirt and debris. If you notice a drop in its performance or an unusual rise in engine oil temperature, it might be time to have it inspected by a professional.