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The 2007 Lexus IS350 should use a 5w-30 synthetic blend motor oil. It's advised to replace the oil every 7,500 miles or annually, whichever occurs first. Regular oil changes can enhance your engine's longevity, fuel efficiency, and overall performance. Changing the oil and filter routinely helps eliminate debris and sludge from the engine. Failing to change the oil can lead to numerous engine issues. Over time, the oil becomes thinner, more abrasive, and can cause significant wear on essential engine components. Synthetic oil is highly recommended for superior performance as it reduces friction and provides better engine protection.
Would using full synthetic oil be too extreme for the engine, or would a synthetic blend be a better option for this engine that is 15 years old?
The 2007 Lexus IS350 should use 5w-30 synthetic blend oil according to the manufacturer's recommendation.