2009 Lexus SC 430 Owners Manual - Page 329

6-1. Specifications Oil viscosity l The 5W portion of the oil viscosity rating indicates the characteristic of the oil which allows cold startability. Oils with a lower value before the W allow for easier starting of the engine in cold weather. The 30 in 5W-30 indicates the oil viscosity when the oil is at its operating temperature. An oil with a higher viscosity may be better suited if the vehicle is operated at high speeds, or under extreme load condition. Cooling system Capacity 10.5 qt. (9.9 L, 8.7 lmp.qt.) Use either of the following: • "Toyota Super Long Life Coolant" • Similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life hybrid organic acid technology Do not use plain water alone. l Coolant type Ignition system Spark plug -Make DENSO NGK - Gap NOTICE n Iridium-tipped spark plugs SK20R11 IFR6A11 0.039 - 0.043 in. (1.0 - 1.1 mm) 6 Vehicle specifications Use only iridium-tipped spark plugs. Do not adjust gap when tuning engine. 335