2009 Lexus IS 350 Owners Manual - Page 430

6-1. Specifications Lubrication system IS250 Oil capacity (drain and refill) without filter 2WD models AWD models with filter 2WD models AWD models Oil grade 6.2 qt. (5.9 L, 5.2 lmp.qt.) 6.2 qt. (5.9 L, 5.2 lmp.qt.) 6.3 qt. (6.0 L, 5.3 lmp.qt.) ⎯ 6.6 qt. (6.3 L, 5.5 lmp.qt.) 6.6 qt. (6.3 L, 5.5 lmp.qt.) 6.8 qt. (6.4 L, 5.7 lmp.qt.) ⎯ ILSAC multi-grade engine oil Use Lexus approved "Toyota Genuine Motor Oil" or equivalent to satisfy the grade and viscosity shown below. Recommended oil viscosity IS350 Outside temperature *:5W-30 is an oil that provides optimal levels of fuel efficiency. 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. l 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. 434