Overfilling engine oil might sound harmless compared to running low, but mechanics are increasingly warning that it can ...

Engines fail quietly when small habits go wrong, and topping off oil incorrectly sits at the top of that list. Many drivers ...

Positive Crankcase Ventilation—three dirty words, but do they really need to be perceived that way? In general, the PCV system has two main functions: vapor relief and liquid separation. PCV systems ...

Everything, even the smallest of things, can affect the performance of your engine. Whether topping off your fuel tank or driving on motor oil past its expiration date, you're slowly killing your car.

When something feels off with your car, it's always a good idea to pay close attention. Often, these small signs are hints that there's a bigger problem that needs your attention. For example, you ...

When you think about race engine builders utilizing dry-sump oiling systems, it's only natural to consider the Nextel Cup guys or maybe the touring Dirt Late Model cars. After all, that's where the ...

We may receive a commission on purchases made from links. Knowing the ins and outs of your vehicle is essential for any DIY fix, and that goes tenfold for the engine and all its parts. When it comes ...

For decades, the golden rule of engine care has been pretty simple — change the engine oil every 3,000 miles. It's one of those maintenance mantras so ingrained in practice that most drivers never ...

The next-gen heavy-duty engine oil standard (PC-12) has been formally approved, announced the American Petroleum Institute, which also introduced the new CL-4 and FB-4 “donut” certification marks ...