Ram Trucks 2014 Chassis Cab Commercial - Diesel Supplement - Manual (Page 146)

NOTE: Light duty operation such as light trailer towing
or no load operation will extend the time before the
engine is at full efficiency. Reduced fuel economy and
power may be seen at this time.
For additional vehicle break-in requirements, refer to
“Trailer Towing” in “Starting And Operating” of the
Owners Manual.
Because of the construction of the Cummins® turbo-
charged diesel engine, engine run-in is enhanced by
loaded operating conditions which allow the engine
parts to achieve final finish and fit during the first
6,000 miles (10 000 km).
144 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE