2009 Chrysler PT Cruiser Owner Manual - Page 356

M A I N T E N A N C E 354 MAINTENANCE SCHEDULES EMISSIONS CONTROL SYSTEM MAINTENANCE The Scheduled Maintenance services listed in bold type, must be done at the times or mileages specified to ensure the continued proper functioning of the Emissions Control System. These, and all other maintenance services included in this manual, should be done to provide best vehicle performance and reliability. More frequent mainS tenance may be needed for vehicles in severe operating C conditions, such as dusty areas and very short trip H driving. E D U L E S MAINTENANCE SCHEDULES There are three maintenance schedules that show required service for your vehicle. First is "Maintenance Schedule B - All Engines." It is for vehicles that are operated under the conditions that are listed below and at the beginning of the schedule. • Day and night temperatures are below 32°F(0°C). • Stop and go driving. • Extensive engine idling. • Driving in dusty conditions. • Short trips of less than 10 miles (16 km). • More than 50 percent of your driving is at sustained high speeds during hot weather, above 90°F(32°C). • Trailer towing.