Diesel Exhaust Fluid Storage - Dodge RAM 1500 User Manual

6 . 7 L C U M M I N S ® D I E S E L

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 in the instrument cluster) will display the level of DEF
remaining in the tank.
Completely fill the DEF tank through the diesel exhaust fluid fill location at every
maintenance interval or before if prompted by the Electronic Vehicle Information
Center (EVIC)/Driver Information Display (DID).
NOTE:
• Driving conditions (altitude, vehicle speed, load, etc.) will effect the amount of
DEF that is used in your vehicle.
• Since DEF will begin to freeze at 12°F (-11°C), your vehicle is equipped with an
automatic DEF heating system. This allows the DEF injection system to operate
properly at temperatures below 12°F (-11°C). If your vehicle is not in operation for
an extended period of time with temperatures below 12°F (-11°C), the DEF in the
tank may freeze. If the tank is overfilled and freezes, it could be damaged.
Therefore, do not overfill the DEF tank. Extra care should be taken when filling
with portable containers to avoid overfilling. Note the level of the DEF gauge in
your instrument cluster. On pickup applications, you may safely add a maximum of
2 gallons of DEF from portable containers when your DEF gauge is reading ½ full.
On Chassis Cab applications a maximum of 2 gallons may be added when the DEF
gauge is reading ¾ full.
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