Most people are familiar with the importance of oil for the internal combustion engines that power our modern vehicles. The petroleum-based fluid is designed to provide lubrication to the vast amount ...

Dear Tom and Ray: Is it safe to add a few capfuls of denatured alcohol to the crankcase of my two older vehicles to remove oil sludge before I change the oil? -- Lorilee RAY: Is it safe? Well, I don't ...

While fresh oil is generally transparent and amber colored, black oil may mean it's time for a replacement and frothy oil can ...

If you've ever removed your oil cap during a routine check or oil change and noticed a creamy white or yellowish, almost mayonnaise-like substance underneath it, you're not alone. You'd be well within ...

Toyota Motor Corp., plagued for years by claims that engines in some of its most popular vehicles were subject to damaging oil sludge buildup, has settled a class-action lawsuit over the issue. The ...