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 Insight EXFACTORY OEM SERVICE PROCEDURE
Quick Lookups: Fluids
| FLUID CAPACITIES | |||||||
|---|---|---|---|---|---|---|---|
| Fluid Type | Application | Standard | Metric | Fluid Spec | Note | S/H | |
| Air Cond Compressor Oil | 4.15 OZS. | 0.12 L | ND-OIL11 (POE) | S | |||
| Air Cond Refrigerant | 0.98 LBS. | 0.44 KG | HFO-1234yf (R-1234yf) | S | |||
| Automatic Transmission Fluid | 2.30 QTS. | 2.17 L | HONDA Automatic Transmission Fluid ATF DW-1 | S | |||
| Brake Fluid | N/A | N/A | HONDA Heavy Duty Brake Fluid DOT 3 | Use DOT 4 as a temporary replacement. | S | ||
| Engine Coolant | 1.22 GALS. | 4.61 L | HONDA Long-Life Antifreeze/Coolant Type 2 | This coolant is pre-mixed with 50/50 antifreeze and water. Never add straight antifreeze or plain water. Includes: the coolant in the reserve tank and that remaining in the engine. | S | ||
| Engine Oil | Drain and Refill,w/Filter | 3.50 QTS. | 3.31 L | Genuine HONDA Motor Oil 0W-20 or API Premium-grade - SAE 0W-20 Detergent Oil | You may use a synthetic motor oil if it displays the API Certification Seal, and it is the proper weight. | S | |
| Engine Oil | Drain and Refill,w/o Filter | 3.30 QTS. | 3.12 L | Genuine HONDA Motor Oil 0W-20 or API Premium-grade - SAE 0W-20 Detergent Oil | You may use a synthetic motor oil if it displays the API Certification Seal, and it is the proper weight. Your vehicle does not require oil additives. In fact, they may adversely affect the engine performance and durability. | S | |
| Fuel Tank | 10.60 GALS. | 40.12 L | S | ||||
| Windshield Washer Fluid | 2.60 QTS. | 2.46 L | All Weather Windshield Washer Fluid | DO NOT use engine antifreeze or a vinegar/water solution in the windshield washer reservoir. | 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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