Dodge 2005 Viper Owner's Manual page 165

The best time to check the oil level is approximately 5
minutes after a fully warmed up engine is turned off or
before starting the engine after it has sat overnight.
Checking the oil while the vehicle is on level ground also
will improve the accuracy of the oil level readings. Add
oil only when the level is below the SAFE mark.
Engine Oil Dipstick
MAINTAINING YOUR VEHICLE 165
Changing Engine Oil
Road conditions and your kind of driving affects the
interval at which your oil should be changed.
If ANY of the following apply to you, then change your
engine oil every 3,000 miles (5 000 km) or 3 months,
whichever comes first and follow the maintenance rec-
ommendations in Schedule B.
• Day or night temperatures are below 32°F (0°C)
• Stop and go driving
• Extensive engine idling
• Driving in dusty conditions
• Short trip driving of less than 10 miles (16.2 km)
• More than 50% of your driving is at sustained high
speeds during hot weather, above 90°F (32°C)
• Taxi, Police, or delivery service (commercial service)
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