2006 Jeep Liberty Owner's Manual - Page 276
2006 Jeep Liberty Manual
Page 276 highlights
276 STARTING AND OPERATING 2.8L Turbo Diesel Engines Rotate the tires every 6,000 miles (10 000 km). NOTE: The Premium Tire Pressure Monitor System will automatically locate the pressure values displayed in the correct vehicle position following a tire rotation. The suggested rotation method is the "forward-cross" shown in the following diagram. FUEL REQUIREMENTS (GASOLINE ENGINES) Your engine is designed to meet all emissions regulations and provide excellent fuel economy and performance when using high quality unleaded gasoline having an octane rating of 87. The use of premium gasoline is not recommended. The use of premium gasoline will provide no benefit over high quality regular gasoline, and in some circumstances may result in poorer performance. Mid-grade gasoline (89 octane) will enhance engine performance during the following conditions (3.7L Only): • Hot weather • Towing • Hard accelerations • Hilly terrain