2008 Dodge Viper Owner Manual - Page 205

204 MAINTAINING YOUR VEHICLE Fuel Filter The fuel filter is a part of the fuel module and it does not require maintenance. Catalytic Converter The catalytic converter requires the use of unleaded fuel only. Leaded gasoline will destroy the effectiveness of the catalyst as an emission control device. Under normal operating conditions, the catalytic converter will not require maintenance. However, it is important to keep the engine properly tuned to assure proper catalyst operation and prevent possible catalyst damage. CAUTION! Damage to the catalytic converter can result if your vehicle is not kept in proper operating condition. Have your vehicle serviced promptly in the event of engine malfunction, particularly when involving engine misfire or other apparent loss of performance. Continued operation of your vehicle with a severe malfunction could cause the converter to overheat, resulting in possible damage to the converter and the vehicle. NOTE: Intentional tampering with emissions control systems can result in civil penalties being assessed against you.