Before you begin
Change the oil in your 2008 or newer Scion xB to keep the engine running strong. Regular oil changes are one of the easiest DIY procedures to prolong engine life. For years, 3,000 miles was the correct interval to wait between oil changes, but that is no longer the case. Conventional oil in today's engines can easily last over 5,000 miles between changes. Synthetic oils are even more durable, maintaining good engine performance beyond 10,000 miles.