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Each 2015 Lexus GX460 model is equipped with the same 4.6L 8-cylinder engine, the 1UR-FE, meaning that regardless of the specific trim you have, you will be using the same type and amount of oil. Specifically, you will require 8.2 quarts of SAE 0W-20 full synthetic motor oil. In case this type of oil is not available, you may temporarily use SAE 5W-20; however, it is not advisable and should be switched back to the recommended oil as soon as possible. SAE 5W-20 has a higher viscosity at start-up temperatures compared to 0W-20, resulting in additional friction in the engine, leading to premature wear and potential early engine failure. Therefore, it is best to adhere to the manufacturer's suggested oil with the lowest viscosity grade, even though it might be more expensive per change initially, it will save you money in the long run.
Which synthetic motor oil is recommended for a 2015 GX 460 SUV?
Lexus suggests utilizing 0w-20 synthetic oil for a 2015 Lexus GX 460.