Operating Your Vehicle; Engine Break-In Recommendations - Jeep Grand Cherokee User Manual

OPERATING YOUR VEHICLE

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 recom-
mended viscosity and quality grades, refer to "Maintaining Your Vehicle".
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 an indication of difficulty.
Never use Non-Detergent Oil or Straight Mineral Oil in the engine or damage may
result.
ENGINE BREAK-IN RECOMMENDATIONS — SRT8 VERSIONS
• A long break-in period is not required for the drivetrain (engine, transmission, and
rear axle) in your new vehicle.
• Drive moderately during the first 500 miles (800 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 is a high performance synthetic lubricant, the transmission fluid,
and axle lubricant installed at the factory is 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 "Maintaining Your Vehicle".
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 an indication of difficulty.
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CAUTION!