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10 Best radiator stop leak in Canada
Best Choice01K-SealK-Seal ST5516 HD Multi Purpose One Step Permanent Coolant Leak Repair
Main 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
9.9Exceptional
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- Curious about how we select the top products for you? Explore How It Works
- 02Bar'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
9.8Exceptional
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- 03Liqui Moly
Liqui Moly Radiator Stop Leak | 250 ml | Cooler additive | SKU: 20132
Main 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
9.7Exceptional
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Value for Money04Bar's LeaksBar's Leaks 1186 Liquid Aluminum Stop Leak - 16.9 oz.
Main 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.
9.6Exceptional
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- 05Bar's Leaks
Bar's Leaks 1196 Grey Radiator Stop Leak - 11 oz.
Main highlights- Works with all types and colors of anti-freeze coolant
- Stops and seals coolant leaks
- One bottle treats up to 4 gallons
9.4Excellent
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- 06K-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
9.2Excellent
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- 07Bar's Leaks
Bar's Leaks - 1177 - BAR'S LEAKS Radiator Stop Leak TABS
Main highlights- WORKS WITH ALL TYPES OF ANTIFREEZE OR WATER: Professional strength formula works with ALL types and colors of antifreeze coolant including conventional, extended life, waterless and straight water.
- SEALS LEAKS AND SEEPAGE: For continued protection of the entire cooling system, repeat Bar’s Leaks application every 15,000 miles or once per year.
- PROFESSIONAL STRENGTH FORMULA: Bar's Leaks Radiator Stop Leak Tablets inhibit the formation or rust and scale, neutralize pH imbalance, controls electrolysis, lubricates and seals internal, external and coolant-to-oil leaks.
- OEM USED AND APPROVED: Same tablets as used by manyOEM auto and truck manufacturers around the world.
- Bar's Leaks Radiator Stop Leak Tablets inhibit the formation or rust and scale, neutralize pH imbalance, controls electrolysis, lubricates and seals internal, external and coolant-to-oil leaks.
9.1Excellent
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- 08Liqui Moly
Liqui Moly Radiator Stop Leak – 250 ml Cooling System Leak Sealer, Quickly Seals Hairline Cracks, Porous Joints & Small Radiator Leaks, Compatible with Aluminum Radiators
Main highlights- Universal Compatibility
- Safe for Radiators & Water Pump System
- Protects Engine & Head Gasket Integrity
- Preventive & Maintenance Use
- Fast Cooling System Leak Repair
8.9Very Good
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- 09K-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
Main 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!
8.8Very Good
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- 10IRONTITE
Irontite All Weather Seal, Blue, 16 oz
Main 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.
8.7Very Good
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