CARS.COM — We’ll pull no punches in saying it: Engine oil is a crucial thing to keep tabs on from a maintenance perspective. That means you should check your vehicle’s engine oil at least once a month ...

Engine oil is crucial to keep your car running smoothly, and while your engine isn't supposed to consume oil like it uses up fuel, you still tend to lose some of it as you use your vehicle daily. So, ...

At a time when vehicle diagnostics can demand a computer science degree, being able to get some insight into your engine health with nothing but a rag and a bit of know-how can be downright refreshing ...