Although the oil filter has a fairly simple look to it, it can be extremely difficult to install. The amount of tilt in its mounting, location, size, and how the previous filter was installed all affect how difficult it will be to replace. Under the best conditions, an oil filter can be removed by hand; but you shouldn't count on it. Because the old oil filter will most likely be coated with a thin film of oil and grease, you will most likely have to use a wrench for removal. You may want to wear a pair of latex gloves because replacing the oil filter will be a messy job. One forth of your oil's makeup consists of contaminants in the suspension that are grabbed by additives. The oil pump sends oil from the oil sump and through the oil filter, which distributes it through the engine. Once the oil enters the oil filter, it is pushed through holes on the outskirts of the base plate. At this point, the dirty oil is sent through a filter media where it is cleaned. From there, the oil flows through the central tube and back to the engine through a hollow center mounting stud. Without the oil filter, your oil would quickly saturate with contaminants and wear the internal parts of your engine down. Although your owner's manual will recommend a timeframe for you to replace your oil filter, a good rule of thumb is to replace it during each oil change. When it's time for you to purchase a new oil filter, shop with us. We've got a huge selection of oil filters in our online catalog. All of our oil filters are sold at low, discount prices so you'll never have to worry about paying too much with us.