Do you often find that your oil level is lower than you expect when you check it, or do you get a lot of grief from the tech at the oil change shop about your oil change intervals? If so, your engine ...

It doesn't matter if you have a hybrid or conventional gas-powered car, a good motor oil can make the difference between a long-lasting engine and a sputtery ride. Here's what you should look for when ...

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

Motor oil is the lifeblood of your car's engine. Not only does it provide lubrication for all of your engine's internal moving parts — of which there are massive amounts — but it also works like a ...

Car diagnostic tests scan a car’s components and integrated systems for errors or malfunctions before they become dangerous. These tests leverage computerization to keep your car in optimal working ...