2007 Jeep Grand Cherokee Owner's Manual - Page 305

STARTING AND OPERATING 305 Under-inflation also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling and stopping ability. • The TPMS is not a substitute for proper tire maintenance, and it is the driver's responsibility to maintain correct tire pressure, even if under-inflation has not reached the level to trigger illumination of the "Tire Pressure Monitoring Telltale Light." General Information This device complies with part 15 of the FCC rules and RSS 210 of Industry Canada. Operation is subject to the following conditions: • This device may not cause harmful interference. • This device must accept any interference received, including interference that may cause undesired operation. The tire pressure sensors are covered under one of the following licenses: United States ...KR5S120123 Canada ...2671-S120123 FUEL REQUIREMENTS 3.7/4.7L Engines (If Equipped) All engines (except 5.7L engines) are designed to meet all emissions regulations and provide excellent fuel economy and performance when using high quality unleaded "regular" gasoline having an octane rating of 87. The use of premium gasoline is not recommended. Under normal conditions, the use of premium gasoline will not provide a benefit over high quality regular gasolines, and in some circumstances may result in poorer performance. 5