Before you begin
Regular oil and filter changes are essential maintenance for the E46 M3's high-performance S54 engine. The service indicator on the dash will tell you when it's time for an oil service, although some folks choose to do it more frequently (such as every 7,500 or 10,000 miles). Be sure to use the correct oil. BMW recommends Castrol TWS 10W-60, which you can purchase online or at your BMW dealer. Photos for this guide are used with the kind permission of contributor JeST at EuroAddiction.net.