2003 Hyundai Sonata Owner's Manual - Page 162

DO-IT-YOURSELF MAINTENANCE 6- 7 4. When the oil has stopped draining, replace the drain plug using a new washer and retighten by turning it clockwise. Tightening torque is: 3.5 ~ 4.5 kgf.m 5. Remove the oil filter by turning it counterclockwise with a oil filter wrench of the proper size. A certain amount of oil will come out when you remove the filter. So be sure to have your drain pan in place underneath it. 6. Install a new oil filter in accordance with the instructions on the carton or on the filter itself. Do not over-tighten. Tightening torque is: 1.2 ~ 1.6 kgf.m Be sure that the mounting surface on the engine is clean and that the old gasket is removed completely. Lubricate the new gasket on the filter with clean engine oil before installation. 7. Refill the crankcase with the recommended engine oil. Refer to the specification in chapter 9 for engine oil capacity. 8. Start the engine and check to be sure no oil is leaking from the drain plug or oil filter. 9. Shut off the engine and recheck the oil level. NOTE: Always dispose of used engine oil in an environmentally acceptable manner. It is suggested that it be placed in a sealed container and taken to a service station for reclamation. Do not pour the oil on the ground or put it into the household trash. G050A01A-AAT CHECKING AND CHANGING THE ENGINE COOLANT ! WARNING: ! WARNING: Used motor oil may cause irritation or cancer of the skin if left in contact with the skin for prolonged periods of time. Wash your hands thoroughly with soap and warm water as soon as possible after handling used oil. Do not remove the radiator cap when the engine is hot. When the engine is hot, the engine coolant is under pressure and may erupt through the opening if the cap is removed. You could be seriously burned if you do not observe this precaution. Do not remove the radiator cap until the radiator is cool to the touch.