2021 Mazda 6 Oil Type & Capacity
The 2021 Mazda 6 oil type depends on the engine: the Carbon Edition takes 5W-30 (5.1 quarts qt with filter); the Grand Touring takes 5W-30 (5.1 quarts qt with filter); the Grand Touring Reserve takes 5W-30 (5.1 quarts qt with filter); the Signature takes 5W-30 (5.1 quarts qt with filter); the Sport takes 0W-20 (4.8 quarts qt with filter); the Touring takes 0W-20 (4.8 quarts qt with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- Carbon Edition: 5W-30, 5.1 quarts with filter
- Grand Touring: 5W-30, 5.1 quarts with filter
- Grand Touring Reserve: 5W-30, 5.1 quarts with filter
- Signature: 5W-30, 5.1 quarts with filter
- Sport: 0W-20, 4.8 quarts with filter
- Touring: 0W-20, 4.8 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Carbon Edition — 2.5L Eng,Turbocharger | API - ILSAC, SAE 5W-30 Engine Oil | 5.10 QTS. | 4.90 QTS. | — |
| Grand Touring — 2.5L Eng,Turbocharger | API - ILSAC, SAE 5W-30 Engine Oil | 5.10 QTS. | 4.90 QTS. | — |
| Grand Touring Reserve — 2.5L Eng,Turbocharger | API - ILSAC, SAE 5W-30 Engine Oil | 5.10 QTS. | 4.90 QTS. | — |
| Signature — 2.5L Eng,Turbocharger | API - ILSAC, SAE 5W-30 Engine Oil | 5.10 QTS. | 4.90 QTS. | — |
| Sport — 2.5L Eng,Normally Aspirated | API - ILSAC, SAE 0W-20 Engine Oil | 4.80 QTS. | 4.50 QTS. | — |
| Touring — 2.5L Eng,Normally Aspirated | API - ILSAC, SAE 0W-20 Engine Oil | 4.80 QTS. | 4.50 QTS. | — |
More factory specs & repair guides for your 6
🛞 2021 Mazda 6 Tire Size & Pressure →🌧️ 2021 Mazda 6 Wiper Blade Sizes →💡 2021 Mazda 6 Light Bulb Sizes →📖 2021 Mazda 6 Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
8.8 quarts (8.32 L). Use FL22 type coolant in vehicles with the inscription "FL22" on the radiator cap itself or the surrounding area. For vehicles without "FL22" inscription use a mixture of demineralized water and ethylene-glycol-based coolant. Do not use solution that contains more than 60% antifreeze. Above -16Deg. C {3.2Deg. F} 65% water/35% coolant. Above -26Deg.C {-15Deg.F} 55% water/45% coolant. Above -40 Deg. C {-40Deg.F} 45% water/55% coolant.
Frequently asked questions
What type of oil does a 2021 Mazda 6 take?
It depends on the engine: Carbon Edition uses 5W-30; Grand Touring uses 5W-30; Grand Touring Reserve uses 5W-30; Signature uses 5W-30; Sport uses 0W-20; Touring uses 0W-20.
What is the oil capacity of a 2021 Mazda 6?
Oil capacity depends on the engine: Carbon Edition holds 5.1 quarts with filter; Grand Touring holds 5.1 quarts with filter; Grand Touring Reserve holds 5.1 quarts with filter; Signature holds 5.1 quarts with filter; Sport holds 4.8 quarts with filter; Touring holds 4.8 quarts with filter.
How often should I change the oil in my 2021 Mazda 6?
Most 2021 Mazda 6 owners follow a 5,000–7,500 mile interval with conventional oil, or up to 10,000 miles with full synthetic. Always check the oil life monitor if equipped, and consult your owner's manual — Mazda recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 2021 Mazda 6?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2021 Mazda 6. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.