The 2018 Lexus RX350 3.5 liter V6 engine has an oil volume of 6.4 quarts or 6 liters with a filter as indicated by the manufacturer. The suggested oil for the SUV is SAE 0w-20 full synthetic for all temperatures and You can replace the engine oil and filter every 5000-7500 to ensure that Your engine is at its best. Failure to adjust the oil allows the oil to lose its viscosity and does not adequately lubricate the internal sections of the engine, such as pistons and cylinders. The price for oil will range from $5-$10 per quart depending on whether the oil is traditional or synthetic and the brand/quality of the oil. Make sure that You still replace the oil if You replace the oil filter as well which costs about $10 - $20 depending on the brand and quality. When tightening the drain plug make sure not not overtighten it or strip as it will cause an oil leak, the recommended torque iS30 ft/lbs.
My 2018 RX350 takes exactly 7 quarts. Level ground, checked 3 times, changed 14 times. Always 7 qts. So what others say about 6.4 or 6 or 6.25 qts………7 qts
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