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.
At the First A Inspection Interval
Although this quality-built vehicle has been inspected, lubricated and adjusted at the MACK Trucks Assembly Plant, an occasional air, oil or coolant leak may develop. Quick action to correct these minor items will prevent a major repair later. Take the vehicle to the nearest MACK service center as soon as any abnormal condition becomes evident.
Source: MaintainX (Community Member)