Engine coolant change interval
Initial change 6 years or 100,000 miles (160,000 km)
(whichever comes first), or as indicated from the
coolant tests for concentration (freeze-point) or
additive strength (corrosion inhibitor)
After initial change Every 3 years or 50,000 miles (80,000 km), or as
indicated from the coolant tests for concentration
(freeze-point) or additive strength (corrosion
inhibitor)
Use engine coolant specified in theMaintenance product
specifications and capacitiestable in theMaintenance and
Specificationschapter
Refer toSpecial operating conditionslater in this chapter
Check every month
Engine air filter restriction gauge
Fuel filter/water separator; drain if necessary (or if indicated by the
message center)
Holes/Slots in the tail pipe to make sure they are functional and clear
of debris
Retightening lug nuts*
Vehicles with single
rear wheelsRetighten the lug nuts to the specified torque at
500 miles (800 km) after any wheel disturbance
(tire rotation, changing a flat tire, wheel removal,
etc).
Vehicles with dual
rear wheelsRetighten the wheel lug nuts to the specified
torque at 100 miles (160 km), and again at
500 miles (800 km) of new vehicle operation and
after any wheel disturbance (tire rotation,
changing a flat tire, wheel removal, etc).
*Refer toWheel lug nut torque specificationsin yourOwner’s Guide
for the proper lug nut torque specification
Scheduled Maintenance Guide
71
2012 Diesel(67l)
Supplement(supplement), 1st Printing
Arabic_(LHD)(gc_lhd)
