Jeep Cherokee (KL): Engine break-in recommendations
A long break-in period is not required for the engine and drivetrain (transmission and axle) in your vehicle.
Drive moderately during the first 300 miles (500 km).
After the initial 60 miles (100 km), speeds up to 50 or 55 mph (80 or 90 km/h) are desirable.
While cruising, brief full-throttle acceleration within the limits of local traffic laws contributes to a good break-in.
Wide-open throttle acceleration in low gear can be detrimental and should be avoided.
The engine oil installed in the engine at the factory is a high-quality energy conserving type lubricant. Oil changes should be consistent with anticipated climate conditions under which vehicle operations will occur. For the recommended viscosity and quality grades, refer to "Maintenance Procedures" in "Maintaining Your Vehicle."
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 operation. This should be considered a normal part of the break-in and not interpreted as a problem.
Other materials:
Heater and air conditioner. Heater and air conditioner control. Heater core
Heater and air conditioner
DESCRIPTION
All vehicles are equipped with a common heater-
A/C housing assembly (Fig. 4). The system combines
air conditioning, heating, and ventilating capabilities
in a single unit housing mounted under the instrument
panel. On heater-only systems, the evaporator
...


