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DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Acura RDXOil Type & Capacity
OEM spec from the factory service manual for the Base variant.
Quick Answer
Oil Type
Genuine ACURA Motor Oil API Premium-grade SAE 0W-20 Detergent Oil.
Capacity (w/ Filter)
5.00 QTS.
4.73 L
Variant
Base
Note: You may also use synthetic motor oil if it is labeled with the API Certification Seal and is the specified viscosity grade.
Source: Factory service manual — 2021 Acura RDX Base. View full manual section →
What You'll Need
Frequently Asked Questions
- What type of oil does a 2021 Acura RDX take?
- The 2021 Acura RDX requires Genuine ACURA Motor Oil API Premium-grade SAE 0W-20 Detergent Oil.. The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the Base configuration.
- How much oil does a 2021 Acura RDX need?
- The 2021 Acura RDX takes 5.00 QTS. (4.73 L) of engine oil with the filter replaced.
- Can I use synthetic oil in my 2021 Acura RDX?
- Yes — synthetic oil that meets the Genuine ACURA Motor Oil API Premium-grade SAE 0W-20 Detergent Oil. specification is acceptable and often preferred for better protection and longer change intervals.
- What happens if I use the wrong oil in my 2021 Acura RDX?
- Using oil that does not meet the Genuine ACURA Motor Oil API Premium-grade SAE 0W-20 Detergent Oil. specification can reduce engine protection, increase wear, and potentially void warranty coverage. Always use oil that meets the OEM spec.