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The 2018 Acura RDX is available in five different versions, but all of them share the same engine - a 3.5L V6. This means that the specific configurations don't matter for our conversation. When it comes to changing the oil, you'll require either 4.5 quarts of SAE 0W-20 synthetic motor oil with a filter, or 4.2 quarts without one. In a pinch, you could use 5W-20 motor oil, but it's not ideal for extended periods. The viscosity of an oil refers to its thickness at different temperatures. The first number (0 or 5) indicates its thickness when starting up, while the second number (20) shows its thickness at full operating temperature. Lower numbers are preferable, so opting for SAE 0W-20 will help keep your engine running smoothly, ultimately prolonging its lifespan.
The 2018 Acura RDX is best suited for using a complete synthetic oil like SAE 0W-20. This SUV comes equipped with a 3.5-liter V6 engine that requires 4.5 quarts of oil with a filter, and 4.2 quarts without.
The optimal choice for the 2018 Acura RDX is to utilize 4.5 quarts of 0W-20 full synthetic engine oil.