Oil is one of the most important fluids running through the engine block. Oil lubricates engine parts, and keeps friction from grinding the engine from the inside out. But do you know what makes the engine oil so useful? It's the oil filter. Without a filter, engine oil would turn into sludge in no time. The filter traps impurities in the oil to keep it as fluid as possible. In case you're not aware, a large part of oil's usefulness is its ability to flow through the most minute holes and oil channels found in your car's engine. This can only be possible with a high-quality filter product such as Mann-Filter. This company does not only cater to car engines, but to truck, heavy industrial vehicle, and motorcycle engines as well. The Mann-Filter brand specializes in European cars such as Mercedes-Benz, BMW, Audi, Volkswagen, Volvo, Porsche, and Jaguar. To satisfy the needs of these high-performance vehicles, years have been spent developing, innovating, and testing the brand's filters. Any engine builder can testify to what's really going on inside your car's motor. The real deal is that most engine components, including pistons, tensioners, camshafts, and crankshafts, have very, very small oil channels. Mann-Filter products are thus designed to trap the most minute impurities in engine oil, including dust, metal shavings, carbon, and soot deposits. These particles clog the miniscule oil channels, eventually causing premature component damage. Mechanics are aware of this, and that's why they can't stress enough the importance of replacing engine oil every 5,000 kilometers or three months, whichever comes first. And don't ever forget to replace the oil filter. If your car is European, use a Mann-Filter oil filter just to be sure. Mann-Filter parts are available here at Car Stuff.