The oil filter serves a dual purpose, as it also protects the engine by retaining a small amount of oil when the car is turned off. The part of the oil filter that makes this retention possible is called the anti drain back valve. While the engine is at rest, the oil drains into the bottom of the engine, leaving the moving parts at the top of the engine without proper lubrication when the car is started again. However, the small amount of oil remaining in the oil filter will circulate quickly into the top of the engine during the first couple of seconds after the car is started, restoring proper lubrication as soon as possible. There are many different kinds of oil filters available. The standard oil filter is usually sufficient, assuming it will be replaced within 3,000 miles (4,828 km). However, an important feature to look for is the anti-drain back valve; an oil filter that has this valve will retain oil while the car is off and provide valuable lubrication to the top of the engine during the first few seconds after startup, as described above. An oil filter without this feature is generally not recommended. When shopping for an oil filter, it is also important to avoid any fancy-sounding technology. An excellent example is the oil filter by a leading manufacturer that includes teflon in the filter itself; the teflon circulates through the engine with the oil. It is important to change your car's oil filter with the engine oil every 3,000 miles or three months, whichever comes first. Because the job of the oil filter is to trap large particles, preventing them from damaging the engine, it is safe to assume that after 3,000 miles the oil filter may well be getting clogged. A clogged oil filter will pose more resistance to the flow of engine oil, backing up the oil passages and preventing lubrication from reaching all parts of the engine. To prevent the serious damage that results from insufficient lubrication, it is imperative that you change your oil filter regularly.

Featured Suppliers of Oil Filters

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