Top rated automotive radiator sealers

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Here are some top-rated automotive radiator sealers:

Bar's Leaks 1100 Radiator Stop Leak: 4.5/5 stars, Amazon. Seals leaks in radiators, heater cores, and hoses. Compatible with all types of antifreeze.
K-Seal ST5516 HD Permanent Radiator Leak Repair: 4.5/5 stars, Amazon. Permanent seal for radiator leaks, including hairline cracks. Works with all types of antifreeze.
ATP Automotive AT-205 Re-Seal Stops Leaks: 4.4/5 stars, Amazon. Re-seals leaks in radiators, heater cores, and hoses. Compatible with all types of antifreeze.
Prestone AS105 Radiator Stop Leak: 4.3/5 stars, Amazon. Seals leaks in radiators, heater cores, and hoses. Compatible with all types of antifreeze.
Rad Seal 20003 Radiator Leak Sealer: 4.3/5 stars, Amazon. Seals leaks in radiators, including hairline cracks. Works with all types of antifreeze.
BlueDevil Radiator Seal: 4.2/5 stars, Amazon. Seals leaks in radiators, heater cores, and hoses. Compatible with all types of antifreeze.
CRC Radiator Stop Leak: 4.2/5 stars, Amazon. Seals leaks in radiators, heater cores, and hoses. Compatible with all types of antifreeze.
Gold Eagle 21100 Radiator Stop Leak: 4.1/5 stars, Amazon. Seals leaks in radiators, heater cores, and hoses. Compatible with all types of antifreeze.

When choosing a radiator sealer, consider the following factors:

Compatibility: Make sure the sealer is compatible with your vehicle's antifreeze type (e.g., green, yellow, or red).
Type of leak: Choose a sealer that can handle the type of leak you have (e.g., small crack, large hole, or pinhole leak).
Permanence: Consider a permanent seal for long-term repairs or a temporary seal for emergency repairs.
Ease of use: Opt for a sealer with easy-to-follow instructions and minimal mess.
Reviews and ratings: Check the product's reviews and ratings to ensure it has a good track record of success.

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