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2021 Mazda CX-9Oil Type & Capacity
OEM spec from the factory service manual for the Carbon Edition, AWD variant.
Quick Answer
Oil Type
API - ILSAC, SAE 5W-30 Engine Oil
Capacity (w/ Filter)
5.10 QTS.
4.82 L
Variant
Carbon Edition, AWD
Source: Factory service manual — 2021 Mazda CX-9 Carbon Edition, AWD. View full manual section →
What You'll Need
Frequently Asked Questions
- What type of oil does a 2021 Mazda CX-9 take?
- The 2021 Mazda CX-9 requires API - ILSAC, SAE 5W-30 Engine Oil. The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the Carbon Edition, AWD configuration.
- How much oil does a 2021 Mazda CX-9 need?
- The 2021 Mazda CX-9 takes 5.10 QTS. (4.82 L) of engine oil with the filter replaced.
- Can I use synthetic oil in my 2021 Mazda CX-9?
- Yes — synthetic oil that meets the API - ILSAC, SAE 5W-30 Engine 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 Mazda CX-9?
- Using oil that does not meet the API - ILSAC, SAE 5W-30 Engine Oil specification can reduce engine protection, increase wear, and potentially void warranty coverage. Always use oil that meets the OEM spec.