2003 Lexus GS 300 Owners Manual - Page 276
2003 Lexus GS 300 Manual
Page 276 highlights
ENGINE - COOLING SYSTEM Capacity Coolant type 7.7 L (8.1 qt., 6.8 lmp.qt.) "Toyota Genuine Long Life Coolant" or equivalent With ethylene-glycol type coolant for a proper corrosion protection of aluminum components Do not use alcohol type antifreeze or plain water alone. NOTE: "Toyota Genuine Long Life Coolant" is filled in your Lexus vehicle. In order to avoid technical problems, we strongly recommend using "Toyota Genuine Long Life Coolant" or equivalent. Please contact your Lexus dealer for further details. - IGNITION SYSTEM Spark plug - Make - Gap DENSO SK16R-P11 1.1 mm (0.043 in.) - ELECTRICAL SYSTEM Battery - Open voltage at 20_C (68_F): 12.7V Fully charged 12.3V Half charged 11.9V Discharged [Voltage that is checked 20 minutes after the key is removed with all the lights turned off] 5A max. - Charging rates 255