New Vehicle Break-In
To ensure many years of reliable, trouble-free operation, the following break-in procedures are recommended:
Note: Oil change, filter change and chassis lubrication are no longer required at the 3,000-mile vehicle break-in interval.
Note: When checking oil levels, the vehicle must be parked on level ground, and the units at normal operating temperature. Components must be filled to the correct level. DO NOT OVERFILL.
Note: Oil and filter change intervals in this manual pertain to components built by Mack Trucks, Inc. For information concerning oil and oil filter change intervals for vendor components, refer to the specific vendor component service literature.
After the First 5000 Kilometers (3000 Miles) or Before 6400 Kilometers (4000 Miles) or Before 3 to 4 Months
Note: On chassis equipped with AIRTEKTM front axle air suspensions, check the torque of the front axle U-bolts at 24 000 kilometers (15,000 miles).
Source: MaintainX (Community Member)