2003 Ford Thunderbird Scheduled Maintenance Guide 6th Printing - Page 13
2003 Ford Thunderbird Manual
Page 13 highlights
Normal Schedule Normal Schedule 20,000 miles Cars, Minivans, Light Trucks, Sport Utilities, Vans, 4x4, Natural Gas, Propane, and Diesel Vehicles Change engine oil and replace oil filter Inspect tires for wear. Rotation recommended for optimal tire life. Additional services for: Diesel Check air filter minder, replace filter as required 25,000 miles Cars, Minivans, Light Trucks, Sport Utilities, Vans, 4x4, Natural Gas, Propane, and Diesel Vehicles Change engine oil and replace oil filter Inspect tires for wear. Rotation recommended for optimal tire life. Additional services for: Diesel Check air filter minder, replace filter as required Additional services for: Natural Gas Drain coalescent fuel filter bowl and replace filter 13 2003 Universal Service Guide (usg) Universal Service Guide USA English (fus)