Ford F-650 2011 Supplement Manual page 206

Maintenance and Specifications
Contaminated DEF
SCR systems are sensitive to
contamination of the DEF. USE
ONLY CERTIFIED DIESEL
EXHAUST FLUID. If the system
becomes contaminated and the
vehicle continues to be driven with
contaminated DEF, the following
warnings will result:
Reducing Agent and Vehicle Consequence
Condition
Correct reducing agent
Incorrect reducing agent, at
detection
Incorrect reducing agent, at
detection + 10 hours
Incorrect reducing agent, at
detection + 20 hours and
engine intentionally shut
down or in extended idle
If any of these warnings appear, the contaminated DEF must be purged
and replaced with approved DEF; refer to an authorized dealer or the
workshop manual.
Upon filling the DEF tank after a DEF contaminated warning, normal
operation will resume when the vehicle is restarted.
DEF guidelines and information
• DEF is non-flammable, non-toxic, colorless and water-soluble liquid.
• Use only DEF that carries the trademark: AMERICAN PETROLEUM
INSTITUTE CERTIFIED DIESEL EXHAUST FLUID.
• Ammonia odor may be smelled when cap is removed or during refill.
Refill DEF in a well ventilated area.
• Prior to filling, make sure surrounding area is clean of debris to
prevent contamination.
• Do not dilute DEF with water or any other liquid.
• Do not put DEF in the fuel tank or any other tank on the vehicle.
• Do not re-use the DEF container or nozzle once it is emptied.
206
2011 F-650/750 (f67)
Supplement, 2nd Printing
USA (fus)
Indicator Lamps Consequence
None
Amber warning
Amber 25% torque derate
warning
Amber warning
Red engine
5 mph (8 km/h)
vehicle speed limit
None
None
25% torque
reduction and