Owner's Manual
Page 197
.... STARTING AND OPERATING 197 Follow the recommended tire rotation frequency for your engine. FUEL REQUIREMENTS Your engine is not harmful to rotation being performed. However, continued heavy spark knock at low engine speeds 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 this manual. Engine damage resulting from operation with a heavy spark knock may result in poorer performance. The use of premium gasoline will provide no benefit over high quality ...
.... STARTING AND OPERATING 197 Follow the recommended tire rotation frequency for your engine. FUEL REQUIREMENTS Your engine is not harmful to rotation being performed. However, continued heavy spark knock at low engine speeds 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 this manual. Engine damage resulting from operation with a heavy spark knock may result in poorer performance. The use of premium gasoline will provide no benefit over high quality ...