2009 Dodge Challenger Owner's Manual - Page 318

316 STARTING AND OPERATING General Information FUEL REQUIREMENTS This device complies with Part 15 of the FCC rules and 3.5L and 5.7L Engines (with Automatic RSS 210 of Industry Canada. Operation is subject to the Transmission) following conditions: The 3.5L and 5.7L engines (with automatic • This device may not cause harmful interference. transmission) are designed to meet all emissions regulations and provide satisfac• This device must accept any interference received, tory fuel economy and performance when including interference that may cause undesired using high-quality unleaded gasoline havoperation. ing an octane range of 87 to 89. The manuThe TPM sensors are regulated under one of the follow- facturer recommends the use of 89 octane for optimum ing licenses: performance. The use of premium gasoline is not recommended, as it will not provide any benefit over regular United States ...KR5S120123 gasoline in these engines. Canada ...2671-S120123 Light spark knock at low engine speeds is not harmful to your engine. However, continued heavy spark knock at high speeds can cause damage and immediate service is required. Poor quality gasoline can cause problems such