Engine Break-In Recommendations - Diesel Engine; Parking Brake - RAM Commercial CHASSIS CAB 3500 2021 Owner's Manual

CAUTION!
Never use Non-Detergent Oil or Straight
Mineral Oil in the engine or damage may result.
NOTE:
A new engine may consume some oil during its
first few thousand miles (kilometers) of opera-
tion. This should be considered a normal part of
the break-in and not interpreted as a problem.
Please check your oil level with the engine oil
indicator often during the break in period. Add
oil as required.
ENGINE BREAK-IN RECOMMENDATIONS —
DIESEL ENGINE
The Cummins® Turbo Diesel engine does not
require a break-in period due to its construction.
Normal operation is allowed, providing the
following recommendations are followed:
Warm up the engine before placing it under

load.
Do not operate the engine at idle for

prolonged periods.
Use the appropriate transmission gear to

prevent engine lugging.
Observe vehicle oil pressure and tempera-

ture indicators.
Check the coolant and oil levels frequently.

Vary throttle position at highway speeds

when carrying or towing significant weight.
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
Ú page 205.
Because of the construction of the Cummins®
Turbo 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).
STARTING AND OPERATING

PARKING BRAKE

Before leaving the vehicle, make sure that the
parking brake is fully applied. Also, be certain to
leave the transmission in PARK.
The foot operated parking brake is located
below the lower left corner of the instrument
panel. To apply the parking brake, firmly push
the parking brake pedal fully. To release the
parking brake, pull the parking brake release
handle.
Parking Brake Release
137
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