Motor oil is one of the most important components of your car and the thing you'll replace the most frequently, but what ...

Best diesel engine oil: Shell Rotella T6 Full Synthetic Diesel: Synthetic: 1 gallon/5 ... Pushing beyond those recommendations could damage your engine. If the light comes on or if you smell ...

If you see a gross white sludge under your oil cap, it might be your car's way of dealing with built-up water and oil. Here's ...

Foamy oil doesn't, and could cause serious engine wear. Foamy oil can show up as a light yellow foam on your dipstick. Tell me more about oil viscosity and additives.

Turn the key to the run position when the engine is off, as you will need some power to reset your oil light. You need to give it enough juice to get everything done, so you must turn the key to the ...

If the oil is not thick enough, it may leak through these gaps or even seep into the combustion chambers and burn. It’s not good if your engine’s burning oil. You can see this happening if bluish ...

My brother has a 5.0 small-block Ford in his 1949 Ford. The engine came from a police car and it was equipped with an oil cooler. We both live in Arizona and even on the hottest days his car never ...

Our picks for the best oil filters will keep your engine oil clean to better protect your car between oil changes. CNET Cars staff. See full bio. CNET Cars staff Sept. 21, 2022 7:00 a.m. PT. 11 ...