A dirty air filter won’t allow your engine to “breathe” as freely as it should, reducing the performance of your car.

Several aftermarket manufacturers sell engine intake air filters that they claim provide better airflow and increase a car’s horsepower and acceleration as a result. Some of these companies have ...

Whether they will work all through the winter is not clear. Having personally gummed small engines up irreparably, I prefer to drain the old fuel and store the equipment empty.

A clogged air filter can cause all sorts of issues, but can it actually lead to overheating in a diesel engine? Here's what you should know.