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.
2025 Mazda CX-90 PHEV PreferredFACTORY OEM SERVICE PROCEDURE
Quick Lookups: Fluids
| FLUID CAPACITIES | |||||||
|---|---|---|---|---|---|---|---|
| Fluid Type | Application | Standard | Metric | Fluid Spec | Note | S/H | |
| Air Cond Refrigerant | N/A | N/A | The refrigerant specifications are indicated on a label attached to the inside of the engine compartment. | S | |||
| Automatic Transmission Fluid | 2.5L Eng | 8.60 QTS. | 8.13 L | MAZDA Genuine ATF A7 | Periodic replacement is unnecessary. | S | |
| Brake Fluid | N/A | N/A | MAZDA Genuine Brake Fluid or equivalent | Fill to line on reservoir. | S | ||
| Differential Gear Oil | Front | 0.37 QTS. | 0.35 L | MAZDA Long Life Hypoid Gear Oil SG1 | Replacement is necessary when the component is submerged in water. | S | |
| Differential Gear Oil | Rear | 0.95 QTS. | 0.89 L | MAZDA Long Life Hypoid Gear Oil SG1 | Replacement is necessary when the component is submerged in water. | S | |
| Engine Coolant | 2.5L Eng | Engine Coolant | 9.70 QTS. | 9.17 L | FL-22 type | S | |
| Engine Coolant | 2.5L Eng | EV System | 6.90 QTS. | 6.52 L | FL-22 type | S | |
| Engine Oil | 2.5L Eng | w/Filter | 4.80 QTS. | 4.54 L | API - ILSAC SAE 0W-20 Engine Oil | S | |
| Engine Oil | 2.5L Eng | w/o Filter | 4.50 QTS. | 4.25 L | API - ILSAC SAE 0W-20 Engine Oil | S | |
| Fuel Tank | 2.5L Eng | 18.50 GALS. | 70.03 L | S | |||
| Transfer Case Fluid | 0.54 QTS. | 0.51 L | MAZDA Genuine ATF A7 | Replacement is necessary when the component is submerged in water. | S | ||
| Windshield Washer Fluid | N/A | N/A | Ultra-Clear Windshield Washer Fluid | S | |||
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.