Not only will dirty oil stop performing well, but as more carbon deposits form, even the flow rate will be diminished. Then, a thick goo-like consistency develops, and the oil filter becomes clogged.

Liquids get thinner as they warm up, but does this happen to the oil inside a car engine? Here are the basics of motor oil chemistry and how heat transforms it.

Our picks for the best oil filters will keep your engine oil clean to better protect your car between oil changes.

A typical gas engine lubrication circuit consists of an oil sump, oil pump, oil cooler, pressure and temperature control valves, full-flow oil filters, and secondary filtration systems.

Filter Mag from Summit Racing Equipment makes metal removal from your engine oil easy. These filters hitch right onto your oil filter and they capture metal before it can flow into your engine and ...