Clogged crankcase ventilation systems often are overlooked causes of engine oil leaks. Savvy service personnel keep these systems at the top of their mental checklists for solving oil leaks. I'll ...

Question: I recently bought a 1981 Monte Carlo with 43,000 original miles on it. The car was driven very little for short distances, when driven at all (a “grandma” car). Overall, it runs great. The ...

Every engine has some sort of crankcase breathing system. The internal combustion process creates pressure, some of which makes its way past the piston rings-along with fuel vapors-and into the rest ...

The PCV (Positive Crankcase Ventilation) system is designed to regulate and remove fumes from the engine crankcase, and to alleviate crankcase pressure which could cause oil leaks or seal damage. The ...

Every engine, regardless of its condition, has a certain amount of blow-by or air/fuel mixture that slips past the pistons and rings and finds its way into the crankcase. In addition, during normal ...

Q I have a 1998 Nissan Sentra with a 1.6-liter engine. It does not leak or use any oil except at highway speeds when it uses up to a quart of oil on a 300-mile trip. I replaced the PCV valve and it ...

Late model Hemi engines offer many advances in technology, and we think this power plant is likely the best performance engine ever designed by the Chrysler Corporation. With a great blend of power, ...

Is your car's engine cover necessary or just for looks? Learn why manufacturers add them in the first place and whether you should consider removing it.

A class-action lawsuit has been filed against GM over problems with the 2.4L Ecotec four-cylinder engine offered in certain 2010 to 2017 model year Chevy, Buick and GMC vehicles. This lawsuit, which ...

Whether it's a puddle under your car or a grimy mess inside your engine bay, finding engine oil where it's not supposed to be is never an enjoyable experience. Normally, oil remains contained within ...