Motor oil is the lifeblood of a car's engine. It keeps all those little components lubricated to keep the engine running smoothly and quietly. Most car owners know how important it is to change motor ...

Engine oil and cold weather don't mix well. Here's why viscosity matters, how cold affects oil flow, and how the right oil can protect your engine all winter.

Vehicle maintenance requires regular attention to several fluid systems that keep cars running safely and efficiently. M ...