Oil Filters are usually found on the engine block, the oil filter is designed to protect you car engine by trapping any large and potentially damaging particles in the oil. It's vital that your filter is kept clean, as a clogged filter can quickly prevent your engine form being properly lubricated. The advice is to replace oil filters regularly with many manufacturers recommending a change every 3,000 to 6,000 miles. If you are looking for the best quality and best value car oil filter then browse Eurocarparts.com. As the leading UK online supplier of car service parts we have all types of oil filter for cars of every make and model.