2004 Chrysler Concorde Owner Manual - Page 167

STARTING AND OPERATING 167 Alignment And Balance The suspension components of your vehicle should be inspected and aligned when needed to obtain full tire tread mileage. Poor suspension alignment may result in: • fast tire wear; • uneven tire wear, such as feathering and one-sided wear; • vehicle pull to right or left. Tires may also cause vehicle to pull to the left or right. Alignment will not correct this condition. See your dealer for proper diagnosis. Improper alignment will not cause vehicle vibration. Vehicle vibration may be a result of tire and wheel out-of-balance. Proper balancing will reduce vibration and avoid tire cupping and spotty wear. FUEL REQUIREMENTS Your engine is designed to meet all emissions regulations and provide satisfactory fuel economy and performance when using high quality unleaded gasoline having an octane range of 87 to 89 or higher. The manufacturer recommends the use of 89 octane for optimum performance. 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 should be reported to your dealer immediately. Engine damage resulting from operating with a heavy spark knock may not be covered by the new vehicle warranty. Poor quality gasoline can cause problems such as hard starting, stalling and stumble. If you experience these problems, try another brand of gasoline before considering service for the vehicle. 5