Bar's - Radiator Stop Leak Powder - 25g
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Product Information
Full details
Bar's Radiator Stop Leak Powder is an essential maintenance solution for vehicle owners looking to address cooling system leaks without the need for expensive mechanical repairs. It is specifically designed to seal internal and external leaks of up to 0.9 mm in diameter, making it ideal for DIYers and professional mechanics who need a quick, reliable fix for metal, plastic, or aluminum radiators. While it effectively restores system integrity and prevents overheating, it is important to note that it acts as a temporary or preventative measure for moderate leaks and cannot repair catastrophic system failures or massive structural cracks.
All features
| Model Part Number | 1830977 |
|---|---|
| Brand | Bar's |
Extended Product Information
FAQs
Will this clog my heater core?
No, the formula is specifically engineered to seal leaks without obstructing or clogging small passages like those found in your heater core.
Can I use this with all types of coolant?
Yes, Bar's Radiator Stop Leak Powder is compatible with all common automotive antifreeze and coolant types.
How long does it take to seal?
Typically, the product begins to work as it circulates through the system, usually showing results after 15 to 20 minutes of engine operation.
Is this a permanent fix?
It is highly effective for minor leaks, but like all stop-leak products, it is intended to seal gaps up to 0.9 mm and should not be considered a permanent replacement for structural radiator repair.
Do I need to flush the system after use?
No, it is designed to remain in the system to provide ongoing protection against future minor seepage.
Troubleshooting
Leak persists after application
Ensure the leak is within the 0.9 mm limit and check if the radiator cap is functioning correctly; a faulty cap may prevent the system from holding the necessary pressure to form a seal.
Difficulty adding powder to system
If the radiator neck is inaccessible, mix the powder with a small amount of warm water before pouring it into the cooling system overflow tank.
Pros and Cons
Pros
- Compatible with a wide range of cooling system materials
- Prevents engine overheating caused by coolant loss
- Compact and lightweight 25g powder formula
- Does not obstruct or clog internal cooling passages
Cons
- Not suitable for repairing large cracks or structural radiator failures
- Requires careful observation to ensure the leak is fully sealed
- Limited to leaks 0.9 mm or smaller in size
Setup, Compatibility & Care
To use the product, ensure the vehicle's engine is completely cool before opening the radiator cap. Carefully pour the contents of the 25g container directly into the radiator or the cooling system overflow tank. After application, run the engine or drive the vehicle for at least 15 to 20 minutes to allow the powder to circulate and properly seal the affected areas. It is compatible with all major types of antifreeze and coolant. For ongoing maintenance, check your coolant levels regularly to ensure the seal remains secure and that there is no further fluid loss.