Engine oil turns black from a combination of combustion byproducts, heat oxidation, and detergent additives suspending carbon particles in the fluid. Black oil is not automatically a sign of a problem ...

Keeping a combustion-engined car in shape requires some effort. Part of that is changing the motor oil and filter on a regular basis to lubricate the moving metal components and keep the engine in ...

Oil additives play an essential role in maintaining car engine health. They provide additional lubrication, protect against wear and tear, and help remove impurities and build-up from your engine.

That old engine may be tougher than you think — if you treat it right.

Add Yahoo as a preferred source to see more of our stories on Google. Oil stain on concrete under a car - Nongasimo/Getty Images If you've ever spotted a dark, greasy blotch under the car in your ...

My Mitsubishi Montero has had a fun year of hauling dogs and camping around New York’s Hudson Valley. Now that cold weather is here and snow is a reality soon, I’m pulling it off the road to give it a ...