3 Ways to Fix Cooling System Leakage
Cooling system leaks are one of the most common issues faced by car owners. They can lead to overheating, reduced performance, and expensive repairs if ignored. Typical signs include a reduced coolant level in the reservoir tank, visible antifreeze runs under the vehicle, or a sweet smell from leaking coolant. Causes range from small cracks in pipelines to worn flanged joints and corrosion inside the radiator. Fortunately, modern solutions like AtomEX Stop Leak Radiator can seal leaks quickly and restore system reliability.
In this guide, we cover 3 ways to fix cooling system leakage, explain why it happens, and how AtomEX Stop Leak Radiator helps seal leaks and protect your engine. For related issues, see our Loss of Coolant Level blog.
Step 1: Identify the signs and likely causes
The first step is diagnosis. Look for low coolant levels, puddles under the car, or overheating. Inspect hoses, clamps, and the radiator core for cracks or corrosion. Common causes include:
- Corrosion: Old coolant loses its protective properties, allowing rust to form.
- Vibration: Loose joints and clamps can create gaps over time.
- Poor maintenance: Neglecting coolant flushes or hose inspections accelerates wear.
- Extreme temperatures: Rapid heating and cooling cycles stress seals and gaskets.
Early detection prevents extensive damage. For more insights, see our Cooling System Instability blog.
Step 2: Apply AtomEX Stop Leak Radiator
Once you’ve identified the leak, AtomEX Stop Leak Radiator offers a fast and effective solution. It seals cracks and minor damage in pipes and joints, and can reseal loose cylinder block gaskets. Unlike older stop‑leak products, AtomEX uses advanced polymers that bond to leakage points without clogging or damaging system components.
Buy AtomEX Stop Leak Radiator and follow these steps:
- Warm the engine to working temperature (warm but not hot).
- Shake the can thoroughly.
- Switch off the engine and pour the product into the radiator tank.
- Restart the engine and run at tick‑over for 5–10 minutes with the interior heating turned on.
Within minutes, leaks begin to seal. After a full drive cycle, the system stabilizes and noise or overheating symptoms should reduce.
Step 3: Prevent future leaks
Prevention is key. Use AtomEX Stop Leak Radiator immediately after a coolant change to provide long‑term protection against rust and corrosion. Regular maintenance also helps:
- Flush coolant every 2–3 years to remove contaminants.
- Inspect hoses and clamps during oil changes.
- Check radiator fins for debris or corrosion.
- Monitor coolant levels monthly.
You can also explore oil‑related issues in our Radiator Coolant Level blog.
Important safety note
If the engine is warm, the cooling system is under pressure. Be careful when opening the radiator cap, as hot steam or liquid may erupt. Always follow safe handling practices and wear protective gloves.
Recommended product
Properties
- Helps prevent costly repairs by sealing leaks quickly
- Works in petrol, gasoline, and diesel engines across vehicles and equipment
- Safe for gaskets, rubber hoses, aluminium, plastic, and steel radiators
- Provides long‑term protection against rust and corrosion
Application instructions
Warm the engine to working temperature (warm but not hot). Shake the can thoroughly. Switch off the engine and pour the product into the radiator tank. Start the engine and run at tick‑over for 5–10 minutes with the interior heating turned on. For long‑term protection, reapply after changing coolant.
For related cooling topics, see our Radiator Coolant Level blog. You can also explore oil‑related