Honda Civic coolant flush:$100 to $160at most shops, 2026
The Civic is one of the easiest mainstream vehicles to flush. The cooling system is compact (around 1.5 gallons), the coolant is widely available, and the DIY procedure is well-documented. Honda's 120,000-mile first interval means many owners never face this service during the first decade of ownership.
DIY
$25 - $50
Type 2 coolant + drain pan
Chain / indy
$100 - $160
Full machine flush
Honda dealer
$160 - $230
Genuine Type 2 included
Honda Civic spec card
Cooling systemBy generation
Pricing across Civic generations
| Generation | Years | Coolant | Capacity | Shop price |
|---|---|---|---|---|
| 8th gen | 2006-2011 | Type 2 (post-2007) | ~1.5 gal | $100 - $150 |
| 9th gen | 2012-2015 | Type 2 | ~1.5 gal | $100 - $150 |
| 10th gen | 2016-2021 | Type 2 | ~1.4-1.6 gal | $110 - $160 |
| 11th gen | 2022-present | Type 2 | ~1.5 gal | $110 - $160 |
| Civic e:HEV (hybrid) | 2025-present | Type 2 + inverter | ~1.6 gal + 0.5 gal | $130 - $190 |
| Civic Type R (FK8 / FL5) | 2017-present | Type 2 | ~1.8 gal | $130 - $200 |
Capacity figures sourced from Honda owner's manuals for each generation. Pricing sampled from independent shops and Honda dealer service menus, May 2026.
DIY walkthrough
Civic drain-and-fill, step by step
The Civic is among the most DIY-friendly modern cars for cooling system work. The bumper does not need to come off, the radiator drain petcock is accessible from underneath, and the air bleed point is simply the upper radiator hose connection. Total job time is about an hour for an experienced DIYer, 90 minutes for a first-timer.
Start with a fully cool engine. Hot coolant under pressure causes serious burns. Lift the front of the vehicle on ramps or jack stands for clearance to the radiator drain. Place a clean 4-gallon drain pan directly under the lower passenger-side corner of the radiator. Locate the drain petcock (plastic, white or blue, usually a quarter-turn) and open it. About 1 gallon of coolant will drain in 5 to 10 minutes.
Close the petcock. Disconnect the lower radiator hose at the engine end for the second drain step. Another half-gallon will come out. This second drain catches coolant that the radiator petcock alone leaves behind. Reconnect the hose, tighten the clamp securely.
Refill through the radiator filler neck with fresh 50/50 Type 2 (or aftermarket equivalent). The system holds roughly 1.4 to 1.7 gallons total. You will get about 1.2 gallons in before air pockets stop the flow. Set the heater on full hot, start the engine, let it idle. As the thermostat opens, the air will purge and the level will drop. Top off as needed for the next 10 to 15 minutes until the level stabilises just below the radiator filler neck. Cap the system.
Top up the overflow reservoir to the COLD line. Run the engine for another 15 minutes with the heater on. Check the level after the engine has fully cooled overnight and top off the reservoir again as needed. Catch any leaks the next morning, especially at the lower hose clamp you disturbed.
Civic DIY parts list
| Honda Type 2, 1 gal (Genuine) | $22 - $30 |
| Zerex Asian Blue, 1 gal | $14 - $20 |
| Drain pan (4 gal) | $10 - $20 |
| Replacement hose clamp (optional) | $3 - $6 |
Why a Civic DIY makes sense
- Easy radiator access from underneath without bumper removal.
- Standard size hose clamps, no special tools.
- Air bleed without scan tool or special procedure.
- Coolant widely available at any parts store.
- Shop savings of $50 to $130 over chain pricing.
Common questions
Honda Civic coolant flush FAQ
How much does a Honda Civic coolant flush cost in 2026?
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A Honda Civic coolant flush costs $100 to $160 at most independent shops in 2026, $99 to $139 at chain quick-lubes that stock Honda Type 2 blue PHOAT, and $160 to $230 at a Honda dealer with genuine Honda Type 2. DIY runs $25 to $50 in parts.
What coolant does a Honda Civic use?
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All Honda Civics 2007 and newer use Honda Type 2 blue PHOAT coolant. The factory part is OL999-9011 sold in pre-diluted 50/50 form. Compatible aftermarket alternatives include Zerex Asian Vehicle Blue, Prestone Asian Vehicles Blue, and Peak Asian Vehicle Blue. Older Civics (pre-2007) used a green silicate coolant that should not be installed in newer cars.
How often should you flush a Honda Civic's coolant?
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Honda specifies the first flush at 120,000 miles or 10 years for vehicles built with Type 2 (most 2010 and newer). Subsequent flushes are at 60,000 miles or 5 years. The long first interval reflects the factory-fill quality. After the first flush, the interval shortens because field refills cannot match the factory vacuum-fill conditions.
How much coolant does a Honda Civic hold?
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Modern Civic (10th and 11th generation) cooling systems hold 1.4 to 1.7 gallons of coolant depending on engine option. The 1.5L turbo and the 2.0L K-series naturally aspirated engines are within a quart of each other. The hybrid Civic e:HEV holds a similar volume for the engine plus a separate small inverter coolant circuit.
Can you do a Honda Civic coolant flush yourself?
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Yes, the Civic is one of the easier vehicles for a DIY drain-and-fill. The radiator drain petcock is at the lower passenger-side radiator tank, the upper radiator hose is easy to remove for a quick gravity drain, and the air bleed is simple via the upper hose port. Total time about an hour, parts cost $25 to $50, savings over a chain flush of $50 to $100.
Is the Honda Civic dealer flush worth the extra cost?
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For Civics under powertrain warranty, yes. The dealer uses Honda Genuine Type 2 and the service is documented in the Honda service network. For Civics out of warranty, an independent shop using verified-compatible Zerex Asian Vehicle Blue provides the same protection at $50 to $100 less.
Does the Civic Type R need different coolant?
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No, the Type R uses the same Honda Type 2 blue PHOAT as the standard Civic. The Type R's 2.0L turbo engine runs hotter under track conditions but the coolant chemistry is the same. Some track-day Type R owners opt for a higher-performance coolant like Engine Ice or Evans NPG; both are aftermarket choices that void factory warranty if applicable.