Most people understand that motor oil is a vital component for the internal combustion engines that power most of our cars. Not only does oil act as a lubricant, allowing internal moving parts to ...

To fully understand oil, it helps to understand what’s happening under the hood. An engine has cylinders inside – for example (and obviously), a four-cylinder engine has four of them. Each cylinder ...

High-mileage oil is typically used for engines with at least 75,000 miles and can include additives to help reduce wear, corrosion and leaks. With a newer vehicle, you should stick with the ...

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

Your engine’s oil pressure is one of those things that needs to be just right. If it’s too high or too low, it can be indicative of other problems. This is especially true with high oil pressure, as ...

Engine oil color reveals its age, contamination level, and operating condition. Fresh oil is amber or light brown. Oil darkened to black but still translucent after a few thousand miles is normal.

No experienced engine builder would intentionally bolt a cylinder head to an engine block without installing a gasket between the block and cylinder head. The gasket seals the block-deck surface to ...

As a critical means of lubricating engine parts and preventing overheating, oil is an indispensable mixture. Since it's so important, some might even wonder if an an oil change improve engine ...