2007 Hyundai Accent Owner's Manual - Page 226

DO-IT-YOURSELF MAINTENANCE 6 7 CHECKING AND CHANGING THE ENGINE COOLANT G050A01TG-AAT G050B01A-AAT G050C01TG-AAT Recommended Engine Coolant WARNING: 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. NOTE: It is recommended that the engine coolant should be changed by an authorized Hyundai dealer. To Check the Coolant Level ! Use a high quality ethylene-glycol coolant in a 50/50 mix with water. The engine coolant should be compatible with aluminum engine parts. Additional corrosion inhibitors or additives should not be used. The cooling system must be maintained with the correct concentration and type of engine coolant to prevent freezing and corrosion. Never allow the concentration of antifreeze to exceed the 60% level or go below the 35% level or damage to the coolant system may result. For proper concentration when adding or replacing the coolant, refer to the following table. Engine coolant Ambient temperature °F (°C) 5 (-15) -13 (-25) -31 (-35) -49 (-45) concentration Antifreeze solution 35% 40% 50% 60% Water 65% 60% 50% 40% G050C01MC The coolant level can be seen on the side of the plastic coolant reservoir. The level of the coolant should be between the "L" and "F" lines on the reservoir when the engine is cool. If the level is below the "L" mark, add engine coolant to bring it up between "L" and "F". If the level is low, inspect for coolant leaks and recheck the fluid level frequently. If the level drops again, visit your Hyundai dealer for an inspection and diagnosis of the reason.