Coolant Flush / Exchange: labor quote guide
Typical labor time (approximate)
About 0.5 to 1.5 hours. Usually about 0.5 to 1.5 hours. Systems with no drain cock, block drains, or vacuum fill bleeding take longer.
Approximate only: a rough general range, not labor-guide data. Times vary widely by vehicle and condition. Check a labor guide for the exact vehicle. How we estimate
The quote buttons open the labor-quote calculator prefilled; "Start an estimate" adds a labor line to the estimate & invoice generator. Add your own rate, parts and tax.
What's involved
- Test coolant condition (pH, freeze point and contamination)
- Drain or exchange the coolant
- flush with water if contaminated
- Refill with the correct coolant type and mix
- Bleed air, run to operating temperature and recheck the level
General outline only. Follow the service information for the specific vehicle.
What changes the time
- Coolant type (OAT, HOAT and others), so don't mix incorrectly
- Systems that need a vacuum fill tool
- Contaminated systems (oil in coolant)
- Drain cock access under shields
Related parts & common add-ons
- Thermostat
- Radiator cap
- Hoses
- Pressure test
Price parts with the parts markup calculator, and note findings on the inspection checklist.
FAQ
How often should coolant be changed?
Follow the manufacturer's interval. Long-life coolants often run for years, but contamination or failed test results justify earlier service.
Can coolant types be mixed?
It's not recommended. Use the type specified for the vehicle.
Why does a vacuum fill help?
It pulls air out of the system first, which reduces airlocks and bleeding time.
More cooling system jobs
- Water Pump Replacement
- Thermostat Replacement
- Radiator Replacement
- Radiator Hose Replacement
- Radiator Cooling Fan Replacement
- Coolant Temperature Sensor Replacement
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