Complete Oil Specifications
Your 2024 Mazda CX-30 2.5L Skyactiv-G requires 0W-20 full synthetic oil meeting API SP and ILSAC GF-6A standards. Mazda’s Skyactiv-G engine uses a high compression ratio (13.0:1) enabled by exhaust gas recirculation — a design that requires low-viscosity oil to minimize pumping losses and maintain the engine’s fuel economy advantage.
Quick Reference
| Specification | Value |
|---|---|
| Viscosity | 0W-20 |
| API Rating | API SP |
| ILSAC Rating | GF-6A |
| Capacity (with filter) | 4.8 quarts |
| Oil Filter | Mazda 1WPE-14-302 |
| Normal Interval | 7500 miles |
Why 0W-20 is Critical for This Engine
The Skyactiv-G 2.5L achieves its class-leading 13.0:1 compression ratio using a longer piston stroke and cooled exhaust gas recirculation. This design creates high cylinder pressures that require oil to flow quickly at cold start to prevent dry-running during the first seconds of operation. Mazda specifies 0W-20 to balance cold-start protection with the thermal film strength needed at high compression.
Using incorrect oil will:
- ❌ Increase cold-start wear on the high-compression pistons and cylinder walls
- ❌ Reduce fuel economy — the engine is calibrated for the lower internal friction of 0W-20
- ❌ Risk voiding Mazda’s powertrain warranty if a non-approved viscosity is used
Mazda-Approved Oil Brands
-
✅ Genuine Mazda Original Oil 0W-20 Full Synthetic
-
✅ Castrol Edge Advanced Full Synthetic 0W-20
-
✅ Mobil 1 Advanced Fuel Economy 0W-20
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✅ Pennzoil Platinum Full Synthetic 0W-20
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✅ Valvoline Advanced Full Synthetic 0W-20
Any oil meeting API SP and ILSAC GF-6A certification is approved by Mazda. The GF-6A standard includes pre-ignition (LSPI) protection testing relevant to high-compression engines.
Severe Service Check
You need the 5000-mile interval if you:
- Drive primarily short trips under 5 miles
- Navigate heavy stop-and-go commuting daily
- Operate in extreme temperatures (below 0°F or above 100°F)
- Drive in mountainous terrain with sustained climbs under load
Installation Details
Drain Plug Torque: 26 ft-lbs
OEM Filter: Mazda 1WPE-14-302
Aftermarket Filters:
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Mobil 1 M1-108A
-
WIX 51358
-
K&N PS-1008
Pro Tip: The CX-30’s oil filter is mounted low on the engine block and can drip onto the crossmember during removal — place a drip tray directly under the filter before loosening.
FAQs
What oil does a 2024 Mazda CX-30 2.5L Skyactiv-G take? 0W-20 full synthetic oil meeting API SP and ILSAC GF-6A standards.
How many quarts does it need? 4.8 quarts with a new filter, 4.5 without.
Can I use 5W-20 or 5W-30 instead of 0W-20? Mazda specifies 0W-20. In an emergency, 5W-20 is an acceptable short-term substitute, but return to 0W-20 at the next service.
Is synthetic oil required? Yes. The Skyactiv-G’s high compression ratio and tight tolerances require full synthetic oil.
How often should I change the oil? Every 7500 miles for normal driving, or 5000 miles for severe service.
Last verified: 2026-05-31 | Source: 2024 Mazda CX-30 Owner’s Manual