RAM 3500 User Manual page 67

• The DEF injection system and SCR catalyst enable the achievement of diesel
emissions requirements; while maintaining outstanding fuel economy,
drivability, torque and power ratings.
NOTE: The DEF pump will run for a period of time after engine shutdown to purge
the DEF system. This is normal operation.
Diesel Exhaust Fluid Storage
• Diesel Exhaust Fluid (DEF) is considered a very stable product with a long
shelf life. If DEF is kept in temperatures between 10° to 90°F (-12° to 32°C), it
will last a minimum of one year.
• DEF is subject to freezing at the lowest temperatures. For example, DEF may
freeze at temperatures at or below 12° F (-11° C). The system has been
designed to operate in this environment.
NOTE: When working with DEF, it is important to know that:
• Any containers or parts that come into contact with DEF must be DEF
compatible (plastic or stainless steel). Copper, brass, aluminum, iron or
non-stainless steel should be avoided as they are subject to corrosion by DEF.
• If DEF is spilled, it should be wiped up completely.
Adding Diesel Exhaust Fluid
• The DEF gauge (located on the EVIC display) will display the level of DEF
remaining in the tank.
• When the DEF gauge reads 75%, add approximately 2.5 gallons (9.5 Liters) to
fill the DEF tank.
• When the DEF gauge reads 50%, add approximately 4 gallons (15 Liters) to fill
the DEF tank.
• When the DEF gauge reads 25%, add approximately 6 gallons (23 Liters) to fill
the DEF tank.
NOTE: Driving conditions (altitude, vehicle speed, load, etc.) will effect the
amount of DEF that is used in your vehicle.
DIESEL
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