2010 Jeep Wrangler Owner's Manual - Page 412

STARTING AND OPERATING 411 General Information FUEL REQUIREMENTS This device complies with part 15 of the FCC rules and All engines are designed to meet all emisRSS 210 of Industry Canada. Operation is subject to the sions regulations and provide excellent following conditions: fuel economy and performance when using high quality unleaded "regular" gaso• This device may not cause harmful interference. line having an octane rating of 87. The use • This device must accept any interference received, of premium gasoline is not recommended, including interference that may cause undesired as it will not provide any benefit over regular gasoline in operation. these engines. The tire pressure sensors are covered under one of the Light spark knock at low engine speeds is not harmful to following licenses: your engine. However, continued heavy spark knock at high speeds can cause damage, and immediate service is United States ...KR5S120123 required. Canada ...2671-S120123 Poor quality gasoline can cause problems such as hard starting, stalling and hesitations. If you experience these symptoms, try another brand of gasoline before considering service for the vehicle. 5