Oil Specification Summary
0W-20
Oil Grade
4.2L
Capacity (inc. filter)
Fully Synthetic
Oil Type
| Parameter | Specification |
|---|---|
| Recommended Grade | 0W-20 |
| Manufacturer Spec | Mazda Original Oil Supra |
| Oil Type | Fully Synthetic |
| Capacity (with filter) | 4.2 litres |
| DPF Compatible | Yes — low-SAPS formula required |
Critical: Always match the manufacturer specification code (Mazda Original Oil Supra), not just the grade (0W-20). The wrong spec oil can cause engine damage, void your warranty, and clog your DPF.
Recommended Engine Oil for Mazda CX-5
Castrol EDGE 0W-20
Fully Synthetic | Meets Mazda Original Oil Supra | 4.2L needed
From ~£32
Shell Helix Ultra 0W-20
Fully Synthetic | Meets Mazda Original Oil Supra | Excellent cold-start
From ~£30
Frequently Asked Questions
What oil does a Mazda CX-5 take?
The Mazda CX-5 (KF) requires 0W-20 engine oil meeting specification Mazda Original Oil Supra. Always use fully synthetic oil.
How much oil does a Mazda CX-5 need?
The Mazda CX-5 has an oil capacity of approximately 4.2 litres including filter. Buy a 5L container to ensure you have enough.
Can I use 5W-30 instead of 0W-20 in my Mazda CX-5?
It is not recommended. The manufacturer specifies 0W-20 for a reason — using a different viscosity can affect fuel economy, emissions, and warranty.
Does the Mazda CX-5 need DPF-safe oil?
Yes — diesel models with a DPF require low-SAPS oil meeting Mazda Original Oil Supra. Using non-DPF-safe oil can clog the DPF filter.