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10 Best radiator stop leak in Canada
Best Choice01IRONTITEIrontite All Weather Seal, Blue, 16 oz
Free ShippingMain highlights- Works with All Types of Antifreeze: This versatile formula is compatible with traditional antifreeze, waterless antifreeze, and various proprietary coolant types, ensuring a perfect fit for any vehicle.
- Permanent Leak Sealant for Cooling Systems: Irontite All Weather Seal creates a permanent seal in head gaskets, radiators, heater cores, and other parts of the cooling system, effectively preventing leaks.
- No Sludge or Clogging: Unlike many other stop-leak products, All Weather Seal won’t cause sludge buildup or clog heater cores, maintaining the performance of your vehicle’s cooling system.
- Ideal for Preventative Maintenance: Perfect for everyday vehicles, commercial trucks, and heavy-duty machinery, this product is a great preventative measure to keep cooling systems leak-free and running smoothly.
- Easy to Use & Compatible with Multiple Materials: This formula is safe for use with aluminum, cast iron, steel, and plastic components, making it a reliable solution for various vehicle types and cooling systems.
- Activates with Heat & Air: Once added, All Weather Seal activates when the cooling system reaches operating temperature, efficiently sealing leaks without interrupting the flow of coolant.
9.9Exceptional
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- Curious about how we select the top products for you? Explore How It Works
- 02K-Seal
K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair
Main highlights- Permanent coolant leak repair
- No draining or flushing
- Mixes with all antifreeze
- Just shake, pour and go
- Fixes cracks and leaks in radiator, head gasket, freeze plugs, cylinder heads, heater core, water pump casing and engine blocks
9.7Exceptional
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- 03Rislone
Rislone Liquid Aluminum Radiator and Heater Core Stop Leak 1 Pack
Free ShippingMain highlights- Safely Seals Leaks in Plastic, Aluminum, and Metal Radiators
- Safely Seals Leaks in Heater Cores, Gaskets, and Freeze Plugs
- One of the few products to meet ASTM D6107 requirements for Stop Leak Additives used in Engine Coolants
- Made in the USA
- Contains Xtreme Cool
9.6Exceptional
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Value for Money04Bar's LeaksBar's Leaks 1186 Liquid Aluminum Stop Leak - 16.9 oz.
26% Off Free ShippingMain highlights- Special Shipping Information: This item cannot be returned and has additional shipping restrictions
- Seals radiator leaks
- Seals freeze plug leaks
- Repairs gasket leaks
- Bar's Leaks Liquid Aluminum Stop Leak seals radiator leaks. Seals freeze plug leaks. Repairs gasket leaks and heater core leaks. Lowers water temperature.
9.5Excellent
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- 05Liqui Moly
Liqui Moly Radiator Stop Leak | 250 ml | Cooler additive | SKU: 20132
Free ShippingMain highlights- Secures the combustion chamber from damages caused by coolant admission
- LIQUI MOLY Radiator Stop-Leak completely seals such leaks immediately with ease
- For all cooling water and heating systems with and without water filters
9.4Excellent
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- 06K-Seal
K-Seal ST5516 HD Multi Purpose One Step Permanent Coolant Leak Repair
17% Off Free ShippingMain highlights- STOP HOLES & CRACKS: With 1 step our unique formula will seek out each hole & crack, permanently sealing them, without any adverse impact on the efficiency of your engine cooling
- Permanent coolant leak repair^Mixes with all antifreeze^No draining or flushing^Fixes cracks and leaks in radiator, head gasket, freeze plugs, cylinder heads, heater core, water pump casing and engine blocks^Just shake, pour and go
- PROFESSIONAL-GRADE RELIABILITY: Trusted by mechanics, our non-corrosive sealer delivers a durable & long-lasting repair, without clogging your cooling system. A cost-effective solution to engine coolant leaks, enhancing the reliability & performance of your vehicle’s cooling system. We've sold millions worldwide & are independently verified by university testing to meet ASTM D3147
- HEAVY DUTY PERFORMANCE: Engineered for large engines & industrial use; suitable for commercial or agricultural vehicles. A permanent repair for the lifetime of the engine. Compatible with all types of antifreeze coolant
- FIX IT FAST: Our multi-purpose solution works in minutes to quickly & permanently seal leaks in the radiator, head gasket, freeze plugs, block, heater matrix & water pump of heavy duty vehicles. Fixes most leaks in water-cooled engines
- EASY TO USE: K-Seal couldn't be simpler & requires no draining or flushing; just shake, pour & go - shake the bottle, add the fluid to your coolant system & run your engine as normal
9.3Excellent
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- 07Bar's Leaks
Bar's Leaks PLT11 Pelletized Radiator Stop Leak - 11 oz.
Main highlights- Seals leaks
- Lubricates water pump seals
- Inhibits rust and corrosion
- Helps control electrolysis
- Conditions cooling system
9.2Excellent
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- 08Bar's Leaks
Bar's Leaks HDC Radiator Stop Leak Tablet - 60 Grams
Free ShippingMain highlights- Seals leaks
- Lubricates water pump seals
- Inhibits rust and corrosion
- Helps control electrolysis
- Conditions cooling system
9.1Excellent
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- 09
General MotorsACDelco Cooling System Seal Tablets, 5-4 grams, Pack of 5
Free ShippingMain highlights- Non-toxic
- Formulated for automotive use
- For use with all vehicles
- Engine application is based on liters of volume in cooling system
- DEX-COOL compatible
8.8Very Good
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- 10K-Seal
K-SEAL Coolant Leak Repair, ST9501 472ml Multi-Purpose Formula Stops Leaks in the Radiator, Head Gasket, Block, Water Pump Casing, Heater Core, Freeze Plug - Pour and Go - Designed for Canadian Market
Free ShippingMain highlights- Stops leaks and seals cracks: Permanently seals holes, cracks and leaks in radiators, cracked head gaskets; cylinder heads, engine blocks, water pumps and heater cores. One bottle effective for up to 12 cylinders.
- Simple & quick: Our one step coolant repair is easy to use! Vigorously shake the bottle, pour into the coolant mixture and run the engine. Works automatically with all types of antifreeze and coolants. No flushing or draining necessary.
- Repairs in minutes: One step multi purpose leak repair system fixes blown head gaskets, water pumps, radiators, engine blocks in all types of vehicles. Designed for harsh weather conditions to withstand temperatures up to 38.88 Celsius.
- CUSTOMER SUPPORT: If our head gasket repair leak doesn’t seal your intake gasket, the system might be over-pressurized. Check the Technical Specification section of this page for extra instructions for a successful repair. Over 8 million sold!.
- ASTM D3147 classification and scientifically tested: By a specialist engineering firm controlling testing with temperature, water and pressure rates. What that means to you - seals holes and cracks and gets you back on the road fast!
8.7Very Good
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