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The 2018 Lexus GX460 holds 8.2 quarts of engine oil. To enhance fuel efficiency and ensure smooth cold starts, it is recommended to use Toyota Genuine Motor Oil with a viscosity rating of SAE 0W-20. If this specific oil is not available, SAE 5W-20 can be used as a temporary alternative until the next oil change, where it should be replaced with SAE 0W-20. It is also acceptable to use other oil brands as long as they meet the ILSAC GF-5 grade and maintain the correct viscosity. It's important to regularly check the engine oil level, ideally once a week or more frequently. To check, make sure the engine is at operating temperature, turned off, and wait a minimum of 5 minutes for the oil to settle back down in the engine.
The oil capacity of the 2018 Lexus GX 460 is 8.2 quarts.