Engine oil turns black from a combination of combustion byproducts, heat oxidation, and detergent additives suspending carbon ...

Just because the oil on your dipstick is black doesn't mean it's time for an oil change. In fact, that really just means the oil is doing its job.

Add Yahoo as a preferred source to see more of our stories on Google. As a critical means of lubricating engine parts and preventing overheating, oil is an indispensable mixture. Since it's so ...

When it comes to car maintenance, it can be easy to overlook oil inspection even when you have the best intentions. At a glance, oil checks might seem minor, but skipping out on this process can end ...

Everything, even the smallest of things, can affect the performance of your engine. Whether topping off your fuel tank or driving on motor oil past its expiration date, you're slowly killing your car.