Cooling System Flush Cost
Coolant + thermostat (optional) + labor. Every 60-100k miles or 5 years.
Result
Total cost
$190.00
DIY: $60.00.
- Coolant$60.00
- Thermostat$0.00
- Base labor$130.00
- Extra labor (thermo)$0.00
- Total (shop)$190.00
- DIY estimate$60.00
- Savings DIY$130.00
Step-by-step
- Coolant = 2 gal × $30 = $60.00.
- Labor (without thermostat) = $130.00.
- Total = $190.00.
How to use this calculator
- Enter coolant, gallons, labor.
- Toggle thermostat replacement.
About this calculator
Coolant degrades over time — pH shifts, corrosion inhibitors deplete, water pump and radiator suffer. Service interval: 60,000-100,000 miles or 5 years (whichever first). Modern long-life coolants (OAT/HOAT) last 100k+; old green ethylene glycol just 30-50k. Always use the type specified in your owner's manual — mixing types reduces protection. Shop service: $100-200. DIY: $40-80 in parts. Doing the thermostat at the same time saves labor.
Frequently asked
IAT (green, traditional). OAT (orange/Dex-Cool, GM). HOAT (yellow, Ford/Chrysler). Pink (Toyota). Don't mix — always check manual.
Related calculators
Oil Change Interval Calculator
Miles since last × interval-miles → next due date and miles. By oil type.
Brake Fluid Flush Cost Calculator
Fluid + labor cost. Recommended every 2 years or 30,000 miles.
Transmission Fluid Service Cost
Fluid + filter + labor cost for ATF service. Every 30-60k miles depending on type.
Total Cost of Ownership (Car)
Purchase + insurance + fuel + maintenance + depreciation over N years.
Car Loan Payment Calculator
Auto loan payment via amortization. Principal, APR, term → monthly + total interest.
Car Depreciation Calculator
Straight-line or declining-balance depreciation. Most cars lose 15-25% year 1, 50%+ by year 5.