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In the 2006 Lexus IS350, it is recommended to use 5w-30 oil. It is important to change the oil every 5,000 to 10,000 miles to maintain the engine's health. Failing to change the oil can lead to engine problems. Using high-quality oil is essential for optimal engine performance. Neglecting oil changes can result in issues like a burning smell, which should be addressed promptly to prevent engine damage. Poor-quality oil can cause engine failure, reduced gas mileage, and abnormal engine noises such as knocking sounds.
The recommended oil for the 2006 Lexus IS350 is STP 5W-30 high mileage motor oil.