Safety Warning
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.
2018 Mazda 6Oil Type & Capacity
OEM spec from the factory service manual for the Sport, 2.5L Eng VIN 5 variant.
Quick Answer
Oil Type
API - ILSAC, SAE 0W-20 Engine Oil
Capacity (w/ Filter)
4.80 QTS.
4.54 L
Variant
Sport, 2.5L Eng VIN 5
Source: Factory service manual — 2018 Mazda 6 Sport, 2.5L Eng VIN 5. View full manual section →
What You'll Need
Frequently Asked Questions
- What type of oil does a 2018 Mazda 6 take?
- The 2018 Mazda 6 requires API - ILSAC, SAE 0W-20 Engine Oil. The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the Sport, 2.5L Eng VIN 5 configuration.
- How much oil does a 2018 Mazda 6 need?
- The 2018 Mazda 6 takes 4.80 QTS. (4.54 L) of engine oil with the filter replaced.
- Can I use synthetic oil in my 2018 Mazda 6?
- Yes — synthetic oil that meets the API - ILSAC, SAE 0W-20 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 2018 Mazda 6?
- Using oil that does not meet the API - ILSAC, SAE 0W-20 Engine Oil specification can reduce engine protection, increase wear, and potentially void warranty coverage. Always use oil that meets the OEM spec.