Mack CHM 2010, Operator'S Handbook Manual

Page: 198 / 232

190 Mack, Emissions Solution
Misfilling Diesel or Aftertreatment DEF Tanks
Although diesel fuel and Aftertreatment DEF caps are clearly labeled and filler necks and
nozzles are different accidents can happen.
Contamination of fluids by- misfilling of diesel or DEF in the wrong tank may result in
vehicle malfunction.
Results of misfilling DEF in Diesel Tank
•
Engine may run poorly or not at all
•
Injectors may be damaged
•
Exhaust system corrosion may occur between turbocharger and Aftertreatment DPF
•
On Board Diagnostic (OBD) Diagnostic Trouble Codes (DTC)
•
Costly repairs
Results of misfilling Diesel in Aftertreatment DEF Tank
•
Aftertreatment SCR system may be damaged by Diesel
•
SCR Catalyst may be damaged by diesel (chemical damage)
•
Emissions may be non-compliant
•
On Board Diagnostic (OBD) Diagnostic Trouble Codes (DTC)
•
Costly repairs
Note: DEF tank has a magnetic interlock and fuel station DEF fluid dispensing nozzle
with a magnetic valve, have to meet to prevent from dispensing into anything other than
the DEF tanks.