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.
2021 Honda Clarity Fuel CellFACTORY OEM SERVICE PROCEDURE
Quick Lookups: Fluids
| FLUID CAPACITIES | |||||||
|---|---|---|---|---|---|---|---|
| Fluid Type | Application | Standard | Metric | Fluid Spec | Note | S/H | |
| Air Cond Compressor Oil | Hydrogen | N/A | N/A | SE-A2 (POE) | Capacity is between: 4.26 - 5.24 ozs. | S | |
| Air Cond Refrigerant | Hydrogen | N/A | N/A | HFO-1234yf (R-1234yf) | Capacity is between: 0.87 - 0.98 lbs. | S | |
| Automatic Transmission Fluid | Hydrogen,Automatic EDT Trans | 1.85 QTS. | 1.75 L | HONDA Automatic Transmission Fluid ATF DW-1 | S | ||
| Brake Fluid | N/A | N/A | HONDA Heavy Duty Brake Fluid DOT 3 | S | |||
| Differential Gear Oil | Rear Axle | 1.30 QTS. | 1.23 L | HONDA Dual PUMP Fluid II | S | ||
| Engine Coolant | Hydrogen | Inverter Coolant | 0.81 QTS. | 0.76 L | HONDA Long-Life Antifreeze/Coolant Type 2 | Change including the remaining 0.21 US gal (0.80 L) in the reserve tank. | S |
| Engine Oil | w/Filter | 3.50 QTS. | 3.31 L | Genuine HONDA Motor Oil 0W-20. API- Premium-grade 0W-20 detergent Oil | S | ||
| Engine Oil | w/o Filter | 3.30 QTS. | 3.12 L | Genuine HONDA Motor Oil 0W-20. API- Premium-grade 0W-20 detergent Oil | S | ||
| Fuel Tank | 7.00 GALS. | 26.49 L | S | ||||
| Windshield Washer Fluid | 1.43 QTS. | 1.35 L | S | ||||
Factory Service Tools
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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.
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