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STARTING AND OPERATING
ENGINE BREAK-IN RECOMMENDATIONS —
6.2L AND 6.4L
The following tips will be helpful in obtaining
optimum performance and maximum durability for
your new vehicle.
The moving parts of the vehicle must 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.
Press the accelerator pedal slowly and not more
than halfway to avoid rapid acceleration.
Avoid aggressive braking.
Drive with the engine speed at 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):
Press the accelerator pedal slowly and not more
than halfway to avoid rapid acceleration in lower
gears (FIRST to THIRD gears).
Avoid aggressive braking.
Drive with the engine speed at less than
5,000 RPM.
Maintain vehicle speed below 70 mph
(112 km/h) and observe local speed limits.
300 to 500 miles (483 to 805 km):
Exercise the full engine RPM range, shifting
manually at higher RPM when possible.
Do not perform sustained operation with the
accelerator pedal at wide open throttle.
Maintain vehicle speed below 85 mph
(136 km/h) and observe local speed limits.
For the first 1,500 miles (2,414 km):
Do not participate in track events, sport driving
schools, or similar activities during the first
1,500 miles (2,414 km).
NOTE:
Check engine oil with every refueling and add if
necessary. Oil and fuel consumption may be higher
through the first oil change interval. Running the
engine with an oil level below the add mark can
cause severe engine damage.
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