Without a reliable oil filter to remove contaminants from your motor oil, the engine in your Toyota or Scion would fill with gunk. The best way to keep that from happening is by installing a genuine oil filter in your engine. Doing so helps keep your engine in top-performing shape. However, even a high-quality OEM oil filter eventually degrades with age or ends up clogged with muck. Not only can that negatively affect engine operation. It can also cause quicker engine, oil pump, and bearing wear. Luckily, it's easy to tell when you should change an oil filter. Do it at every oil change. That's every 3 months or few thousand miles, whichever comes first. What oil filter your Toyota or Scion needs, however, differs by the gasket and thread sizes. You don't want to use the wrong filter: an oil leak can result, but if the filter detaches completely, major engine damage can occur. Either way, your best option for oil filter replacement will be factory Toyota & Scion. OEM oil filters are designed to fit your make and model right off the line. Order online from our auto parts store today, and you'll have your DIY job done in no time!