When engine oil is replaced, the old oil is often collected and discarded, but what happens to that used oil, and how can it ...

Back in the early 20th century, there were only five motor oil grades. Today, there are more than a dozen for various types of engines and vehicles.

The oil in your vehicle’s engine is pretty incredible. Its job is to protect every square inch inside your engine where there is metal-to-metal contact – your piston rings, cylinder walls, valves, ...

Motor oil is marketed with letters and a series of numbers. What does a bottle with a "W" on it mean?

Selecting the right engine oil can be challenging. Between the various different brands and the confusing numbers and oil classifications, you may feel overwhelmed while staring at hundreds of bottles ...

Semi-regular oil changes are (or should be) a regular part of car ownership, with some drivers going to a mechanic for the service and others opting to do it themselves. Changing your own oil comes ...

You pull the dipstick, wipe, re-dip, and there it is — your oil level has dropped lower than a discount muffler after a speed bump. You immediately leap to worst case scenarios like fried piston rings ...

Oil in a car is definitely not one-size-fits-all, and using the wrong oil for either the engine, transmission, or ...

Auction Direct USA in Raleigh, North Carolina, offers professional oil change services to help used car owners maintain ...

Autoblog and Yahoo may earn commission from links in this article.

Fleets report higher lubricant costs as Middle East disruptions tighten supplies of ingredients used in synthetic engine oils ...