2008 Dodge Viper Owner Manual - Page 201

200 MAINTAINING YOUR VEHICLE • More than 50% of your driving is at sustained high speeds during hot weather, above 90°F (32°C) • Trailer towing • Taxi, Police, or delivery service (commercial service) • Off-road or desert driving • If equipped for and operating with E-85 (ethanol) fuel NOTE: If ANY of these apply to you, then change your engine oil every 3,000 miles (5 000 km) or 3 months, whichever comes first, and follow schedule "B" in the ЉMaintenance SchedulesЉ in this manual. If none of these applies to you, then change your engine oil at every interval shown on schedule ЉAЉ in the ЉMaintenance SchedulesЉ in this manual. NOTE: Under no circumstances should oil change intervals exceed 6,000 miles (10 000 km) or 6 months, whichever comes first. Engine Oil Selection For best performance and maximum protection under all types of operating conditions, the manufacturer only recommends full synthetic engine oils that meet the American Petroleum Institute (API) categories of SM or SM/CF, and meet the requirements of DaimlerChrysler Material Standard MS-10725. The manufacturer recommends the use of a full synthetic engine oil, such as Mobil 1௡ SAE 0W-40 or equivalent. Engine Oil Viscosity (SAE Grade) The proper SAE viscosity grade of engine oil should be selected based on the following recommendation and be within the operating temperature shown in the engine oil viscosity chart.