Coolant Service &
Radiator Hose Replacement
Keep Your Engine from Overheating
Your engine's cooling system works year-round to regulate operating temperature. In summer, it prevents overheating. In winter, the antifreeze in your coolant keeps the system from freezing. When the cooling system fails, whether from a cracked hose, a leaking radiator, a failing water pump, or degraded coolant, engine damage can follow quickly and expensively.
At Double Decker Auto Repair we inspect and service complete cooling systems for all makes and models. Our technicians check hose condition, test coolant concentration and pH, inspect the radiator, thermostat, water pump, and overflow reservoir, and perform coolant flushes to remove degraded fluid and protect the system.
Wisconsin's temperature extremes, from below zero winters to hot summers are particularly demanding on cooling system components. Rubber hoses deteriorate faster in these conditions. We recommend having your cooling system inspected every two years or 30,000 miles as a minimum.
Coolant & Hose Services We Provide
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Coolant Flush & Refill
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Coolant Concentration & pH Testing
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Radiator Hose Inspection & Replacement
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Heater Hose Inspection & Replacement
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Radiator Inspection & Replacement
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Thermostat Replacement
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Water Pump Inspection & Replacement
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Coolant Reservoir Inspection & Service
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Coolant Leak Diagnosis & Repair
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Pressure Testing for Leaks
Signs Your Cooling System Needs Service
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Temperature gauge running hotter than normal
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Coolant warning light on the dashboard
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Sweet smell inside or outside the vehicle
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Visible coolant puddle under the vehicle (green, orange, or pink fluid)
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Soft, cracked, or bulging radiator hoses
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White smoke or steam from under the hood
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Heater not producing adequate heat in winter
Coolant Services and Hoses – FAQ
What does the cooling system do in my vehicle?
Your cooling system regulates engine temperature by circulating coolant through the engine, radiator, water pump, and hoses. It prevents overheating and protects your engine from serious damage.
How do I know if I have a cooling system problem?
Common signs include engine overheating, coolant leaks under your vehicle, low coolant levels, or a temperature warning light. You may also notice steam coming from under the hood.
What does a water pump do and why is it important?
The water pump circulates coolant throughout the engine to keep it at a safe operating temperature. If it fails, your engine can overheat quickly and suffer major damage.
How do I know if my radiator or hoses are bad?
Signs include visible coolant leaks, cracked or swollen hoses, rust or corrosion on the radiator, or frequent overheating. These issues should be addressed quickly to avoid engine damage.
How often should cooling system components be replaced?
Hoses and coolant typically need service every 30,000–60,000 miles, while water pumps and radiators last longer but should be inspected regularly. We recommend checking the system during routine maintenance to prevent unexpected failures.