Engine sludge can be detrimental to your vehicle's performance. Here's the most common causes, the warning signs to watch for, and how to get rid of it.

DETROIT - In the latest example of Volkswagen of America Inc.'s quality woes, the automaker is warning 426,000 VW Passat and Audi A4 owners of an engine oil sludge problem. Affected are 1.8-liter ...

Under low temperature engine operation, sludge appears as insolubles in the lubricating oil or as deposits on engine parts. Its formation is initiated by liquid oxidation products, inorganic salts, ...

The Center for Auto Safety is asking the Chrysler group to correct sludge problems and extend the warranty on 2.7-liter V6 engines in 1998-2002 model year vehicles. The Chrysler group is ...