2012 Jeep Liberty Owner Manual - Page 90

88 THINGS TO KNOW BEFORE STARTING 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. CAUTION! Never use Non-Detergent Oil or Straight Mineral Oil in the engine or damage may result. Drive moderately during the first 300 miles (500 km). After the initial 60 miles (100 km), speeds up to 50 or NOTE: A new engine may consume some oil during its 55 mph (80 or 90 km/h) are desirable. first few thousand miles (kilometers) of operation. This While cruising, brief full-throttle acceleration within the should be considered a normal part of the break-in and limits of local traffic laws contributes to a good break-in. not interpreted as an indication of difficulty. Wide-open throttle acceleration in low gear can be detriSAFETY TIPS mental and should be avoided. The engine oil installed in the engine at the factory is a Transporting Passengers high-quality energy conserving type lubricant. Oil NEVER TRANSPORT PASSENGERS IN THE CARGO changes should be consistent with anticipated climate AREA. conditions under which vehicle operations will occur. For the recommended viscosity and quality grades, refer to "Maintenance Procedures" in "Maintaining Your Vehicle".