2003 Honda Accord Owner's Manual - Page 272

Engine Oil Additives Your Honda does not require any oil additives. Additives may adversely affect your engine's or transmission's performance and durability. Changing the Oil and Filter Always change the oil and filter according to the time and distance (miles/kilometers) recommendations in the maintenance schedule. The oil and filter collect contaminants that can damage your engine if they are not removed regularly. Changing the oil and filter requires special tools and access from underneath the car. The car should be raised on a service station-type hydraulic lift for this service. Unless you have the knowledge and proper equipment, you should have this maintenance done by a skilled mechanic. 1. Run the engine until it reaches normal operating temperature, then shut it off. 270 Maintenance