2007 Lexus RX 400h Owners Manual - Page 428

6-1. Specifications Lubrication system Oil capacity (drain and refill) With filter Without filter Oil grade 5.0 qt. (4.7 L, 4.1 lmp.qt.) 4.8 qt. (4.5 L, 4.0 lmp.qt.) ILSAC multi-grade engine oil Use Lexus approved "Toyota Genuine Motor Oil" or equivalent to satisfy the above grade and viscosity. Recommended oil viscosity Temperature range anticipated before next oil change 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 sarting 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. 406