Below is a very good video demonstrating how oil filters work and why selecting a quality oil filter is an important choice for your vehicles engine. The video is done by Mann, which is the largest filtration company in the world. These are very high quality oil filters and yet they have a very reasonable price. Mann filters are made primarily for European vehicles but they do make filters for many other vehicles as well, including Toyota's. My website lists these filters for Toyota's. Enjoy the video. 
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