Motor oil has quietly become one of the most important choices car owners make, especially as vehicles routinely cross ...

Car engines have used motor oil for the whole of automotive history, and during that time a lot of myths have cropped up ...

The oil you put in your engine matters. After all, your engine contains many moving parts that must remain lubricated to work properly. Otherwise, your engine could develop some serious wear and tear.

Here are 2025's most popular questions and answers from The Journal's Car Doctor column, from rotating tires to oil changes.

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 ...

Changing your own oil can save money and prevent unnecessary upselling. Check your oil level and type before starting the process, using your owner's manual or online resources. Gather the necessary ...

The automotive world is constantly evolving, and so is the motor oil that keeps our engines alive and running smoothly. The newly introduced ILSAC GF-7 specification is set to replace GF-6 as the ...

Many owners even consult trusted auto experts, and some begin their search for quality vehicles at places like the best used ...

For years, drivers were told that they needed to change their car's oil every 3,000 miles. But as engines have grown more efficient and oil formulas have improved, that rule of thumb is no longer a ...