Mack TerraPro LEU 2010, Operator'S Handbook Manual

Page: 172 / 225

Mack, US10 Emissions Solution 161
The advantage of using DEF is that it enables the engine to use less EGR -- and
higher oxygen levels -- for better combustion, while meeting the EPA NOx emissions
requirement. By using DEF, we avoid the disadvantages of increasing EGR to massive
levels. This results in better fuel economy from your Mack engine.
W2055490
Vertical SCR, side inlet
CAUTION
Do not put diesel fuel in the
Aftertreatment DEF tank. Diesel
fuel, if sprayed into the hot exhaust
along with the DEF, could ignite
explosively causing a fire resulting
in personal injury or damage to the
exhaust system.