AEM Oil Temperature Gauge Most cars today have a water temp gauge and a oil pressure light. Only a select few have an oil temperature gauge. Few found on the drift team that the 350Z, when pushed ends up with hotter than optimal oil temps. What's worse is that we even got them to approach 260 on the street in less than spirited driving. The two things you must have to protect your motor is oil and water. Even when water temps are in the normal range, your oil can be dangerously hot, causing it to break down. Knowing that you are running over 260 degrees for an extended amount of time gives you the heads up to change your oil sooner than later. The AEM Oil Temperature Gauge is simple to install, and will give you the peace of mind you need to run your car hard.