From DC Performance website...
Oil Change: This should be performed in the first 200 miles of vehicle operation and every 2500-3000 miles thereafter. Use only recommended oil and filters and always change the drain plug gasket. Make sure the oil filter is tight.
Differential Fluid: This fluid should be changed in the first 7500 miles and every 12,500 miles thereafter.
Cooling System: The factory fill is rated to last three years; however, we recommend replacing it every two years. Remove the block plugs and use only distilled water and recommended coolant.
Transmission Service: 1992-1997 Vipers should have this fluid changed every 10,000 to 12,000 miles. 1998 and later models should be serviced every 12,500 to 20,000 miles. Driving habits can affect the frequency of this service.
Chassis Lube: The chassis should be lubed conservatively every 9,000 miles. All excess grease must be removed after completing this service. Overgreasing can cause brake contamination and brake failure.
Brake System Flush: Brake fluid should be flushed every two years or whenever it becomes discolored. Discoloration is an indication of moisture. Brake fluid is dehydrated and can boil easily when it has absorbed moisture.
Flush Clutch Fluid: Flush the clutch fluid every three years or whenever the clutch is worked on.
Power Steering Service: This service depends on driving habits but can range from 7500 to 15,000 miles. If the fluid is dark or smells burnt, it should be replaced.
Tune-Up:We have found that at about 15,000 miles there is enough wear and deposits on the spark plugs to justify a tune-up. A complete diagnostic check of the system should be performed. Replace the PVC valve and service or replace the air filters. Synchronize the throttle cables (Gen 1) if necessary. A fuel injector service and throttle body clean may also be necessary at this time. A Viper tech will let you know. The plug wires should be replaced every second tune-up.
Battery: We have found that few batteries last longer than 3 years. It is essential to clean the battery tray and terminals when replacing the battery.
Serpentine Belt: This belt should be replaced every 22,000 to 25,000 miles. It is the only belt in the system and drives all the accessories.
These are the basics. There are many other systems on the vehicle that need periodic attention. If you race, a more rigorous schedule is necessary. If you follow these basic service requirements your vehicle should perform well for many years.
Source: Winter 2003 Viper Club of America/ Southern California Region (Southern California Viper Review Magazine)
