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Updated
Pros
  • Works on various systems
  • Quick results
  • Reconditions seals effectively
  • Quick and effective
  • Simple application
  • Works with all coolants
Cons
  • Smaller bottle size
  • May require multiple treatments for severe leaks
  • May not work on large leaks
  • Requires correct dosage
Bottom Line
ATP AT-205 Re-Seal Stops Leaks is a professional-grade sealer that stops leaks in radiators, power steering systems, and more. It's fast-acting and compatible with all fluids.
Permatex Radiator Stop Leak provides a reliable solution for sealing minor leaks in radiators and heater cores. It's easy to use and compatible with all antifreeze types.
Size
8 oz
11 oz
Type
Liquid
Liquid
Compatibility
All fluid types
All antifreeze types
Height
4 Inches
8.88 Inches
Length
7 Inches
2.56 Inches
Weight
0.110231131 pounds
0.45 pounds
Width
4.5 Inches
2.56 Inches
Part Number
AT-205
30301
Model
AT-205
30301

When it comes to addressing leaks in your vehicle's cooling system, two popular products stand out among the rest: ATP AT-205 Re-Seal Stops Leaks and Permatex Radiator Stop Leak. Both of these radiator sealants are designed to help you avoid costly repairs and get back on the road quickly. In this comparison, we'll delve into the features, benefits, and differences between these two products to help you make an informed decision.

ATP AT-205 Re-Seal Stops Leaks

The ATP AT-205 Re-Seal is a powerful and versatile radiator sealant that can stop leaks in your vehicle's cooling system. This product works by circulating through the system and sealing any cracks or holes it encounters, ensuring that your engine stays at a safe temperature. The AT-205 Re-Seal is compatible with most types of antifreeze and can be used in a variety of vehicles, including cars, trucks, and SUVs.

One of the key benefits of the ATP AT-205 Re-Seal is its ease of use. Simply pour the product into your radiator, top off the coolant, and let the vehicle run for a few minutes to allow the sealant to circulate and do its job. The AT-205 Re-Seal also comes with a money-back guarantee, giving you peace of mind in case it doesn't work as expected.

Permatex Radiator Stop Leak

The Permatex Radiator Stop Leak is another well-known radiator sealant that's designed to stop leaks and prevent overheating. This product uses a unique blend of ingredients to seal cracks and holes in your cooling system, ensuring that your engine stays safe and runs smoothly. The Permatex Radiator Stop Leak is also compatible with most types of antifreeze and can be used in a variety of vehicles.

One of the key advantages of the Permatex Radiator Stop Leak is its ability to seal larger leaks than some other products on the market. This makes it a great option for vehicles with more extensive damage to their cooling systems. Additionally, the Permatex Radiator Stop Leak is non-corrosive and won't clog your radiator or hoses, ensuring that your vehicle's cooling system continues to function properly.

Comparison of Features and Benefits

When comparing the ATP AT-205 Re-Seal and the Permatex Radiator Stop Leak, there are several key differences to consider. Here are a few of the most notable:

  • Ease of use: Both products are relatively easy to use, but the ATP AT-205 Re-Seal may have a slight edge in this department due to its simple pour-and-go design.
  • Compatibility: Both products are compatible with most types of antifreeze and can be used in a variety of vehicles, including cars, trucks, and SUVs.
  • Sealing ability: The Permatex Radiator Stop Leak may have an advantage when it comes to sealing larger leaks, but the ATP AT-205 Re-Seal is still effective at stopping smaller leaks and cracks.
  • Guarantee: The ATP AT-205 Re-Seal comes with a money-back guarantee, while the Permatex Radiator Stop Leak does not.

Conclusion

When it comes to choosing between the ATP AT-205 Re-Seal and the Permatex Radiator Stop Leak, the decision ultimately depends on your specific needs and preferences. Both of these radiator sealants are effective at stopping leaks and preventing overheating, but they have some key differences in terms of ease of use, compatibility, and sealing ability.

If you're looking for a simple, easy-to-use product with a money-back guarantee, the ATP AT-205 Re-Seal may be the better choice. On the other hand, if you need to seal larger leaks or prefer a non-corrosive formula, the Permatex Radiator Stop Leak may be the way to go.

Ultimately, both of these radiator sealants are high-quality products that can help you avoid costly repairs and get back on the road quickly. By considering your options carefully and choosing the product that best fits your needs, you can ensure that your vehicle's cooling system stays in top condition and runs smoothly for years to come.