The 2010 Honda Fit uses Honda Long-Life Coolant Type 2, a premixed ethylene glycol-based HOAT coolant. Use Genuine Honda Type 2 or an equivalent that explicitly meets Honda’s Type 2 specification.
In detail, this vehicle requires a silicate-free, corrosion-inhibitor coolant designed for aluminum engines. If you’re switching from another coolant, flush the system first and only use a coolant labeled compatible with Honda Type 2. Avoid older Type 1 formulas or Dex-Cool unless the label confirms compatibility with Honda Type 2.
Recommended coolants and compatibility
Below are the options that align with Honda Type 2 compatibility. Always verify the label and your owner's manual before mixing or pouring.
- Genuine Honda Long-Life Coolant Type 2 (premixed 50/50). This is the most straightforward option and guarantees compatibility with the 2010 Fit's cooling system.
- Other HOAT (hybrid organic acid technology) coolants labeled as compatible with Honda Type 2 or as meeting Honda's Type 2 specification. Look for explicit mention of Honda Type 2 compatibility and a silicate-free formulation.
- Concentrate coolants that are HOAT and, when mixed with distilled water, achieve a 50/50 premix and are explicitly compatible with Honda Type 2. Follow the product’s mixing instructions exactly.
Note: Do not use Dex-Cool or universal coolants that contain silicates unless the label confirms compatibility with Honda Type 2. If you’re unsure, consult your mechanic or check your owner’s manual for the approved specification.
How to replace or top off the coolant
If you’re planning to replace or top off the coolant yourself, follow these general steps to avoid air pockets and ensure proper mixture. This is a basic guide; consult the manual or a professional for step-by-step instructions tailored to your vehicle.
- Ensure the engine is cool before opening the cooling system and locate the radiator cap and coolant reservoir.
- Drain the old coolant from the radiator/drain plug, and then flush the system if you suspect contamination or prior coolant type was different.
- Prepare your new coolant: use a premixed 50/50 Type 2 coolant, or mix HOAT concentrate with distilled water according to the label to achieve 50/50.
- Refill the system, then start the engine with the heater on high to bleed air. Let the thermostat cycle until the upper radiator hose feels warm and the heater valve opens fully.
- Top off the reservoir to the correct level, check for leaks, and recheck coolant level after the engine cools again.
If you’re not confident performing a coolant replacement yourself, have a qualified technician do the work to ensure proper bleeding and mix ratios.
Summary
The 2010 Honda Fit uses Honda Long-Life Coolant Type 2, a premixed HOAT coolant designed for aluminum engines. For best results, use Genuine Honda Type 2 coolant or an aftermarket HOAT coolant that explicitly states compatibility with Honda Type 2. Avoid Dex-Cool and unlabeled universal mixes unless confirmed compatible. Follow proper mixing and bleeding procedures, and consult the owner’s manual for interval recommendations.