STARTING AND OPERATING 161
ENGINE BREAK-IN RECOMMENDATIONS —
3.6L & 5.7L
A long break-in period is not required for the
drivetrain (engine, transmission, clutch, and
rear axle) in your new 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. However, wide-open throttle
acceleration in low gear can be detrimental and
should be avoided.
The engine oil, transmission fluid, and axle
lubricant installed at the factory are high-quality
and energy-conserving. Oil, fluid, and lubricant
changes should be consistent with anticipated
climate and conditions under which vehicle
operations will occur. For the recommended
viscosity and quality grades, refer to “Fluids And
Lubricants” in “Technical Specifications”.
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 an indica-
tion of difficulty. Please check your oil level with
the engine oil indicator often during the break in
period. Add oil as required.
ENGINE BREAK-IN RECOMMENDATIONS —
6.2L & 6.4L
The following tips will be helpful in obtaining
optimum performance and maximum durability
for your new vehicle.
Despite modern technology and World Class
manufacturing methods, the moving parts of
the vehicle must still wear in with each other.
This wearing in occurs mainly during the first
500 miles (805 km) and continues through the
first oil change interval.
It is recommended for the operator to observe
the following driving behaviors during the new
vehicle break-in period:
0 to 100 miles (0 to 161 km):
Do not allow the engine to operate at idle for
an extended period of time.
Depress the accelerator pedal slowly and not
more than halfway to avoid rapid accelera-
tion.
Avoid aggressive braking.
Drive with the engine speed less than
3,500 RPM.
Maintain vehicle speed below 55 mph
(88 km/h) and observe local speed limits.
100 to 300 miles (161 to 483 km):
Depress the accelerator pedal slowly and not
more than halfway to avoid rapid accelera-
tion in lower gears (1st to 3rd gears).
Avoid aggressive braking.
Drive with the engine speed less than
5,000 RPM.
Maintain vehicle speed below 70 mph
(112 km/h) and observe local speed limits.
CAUTION!
Never use Non-Detergent Oil or Straight
Mineral Oil in the engine or damage may
result.
5
20_LA_OM_EN_USC_t.book Page 161
To Next Page
Loading...
