Radweld

Radweld

Holts Radweld is a DIY repair product that is designed to seal small leaks in the cooling system.

  • Stops leaks in radiators and hoses
  • Seals in minutes with no clogging or damaging effects
  • Simply pour and go

Radweld is proven to seal small holes, cracks and fissures from within the cooling system, providing a permanent repair for a fraction of the price of replacement parts.

Steam from your radiator and an overheating engine doesn’t have to ruin your day or cost a fortune to repair. With its advanced formula, Holts Radweld will target leaks in your car’s cooling system, safely sealing gaps and holes without causing any damage or clogging within the engine.

 

  • Stops leaks in radiators and hoses
  • Seals in minutes with no clogging or damaging effects
  • Prevents future leaks
  • Simply pour for a repair in minutes

 

Radweld is suitable for all cars and mixes with all types of coolant/antifreeze already in the cooling system. You don’t need any special preparation to use Radweld and there’s no need to drain or flush the cooling system.

Radweld also prevents future leaks to help keep your car on the road for longer. By treating areas of corrosion and pitting at the source, the product effectively extends the life of your coolant/antifreeze and individual components within the cooling system, which helps to prevent future leaks while maintaining the efficacy of engine cooling for longer.

Holts develop products for you right here in the UK, based on the ever-changing needs of the car market, so they’re easy to use.

Radweld gets to work instantly, circulating through the cooling system to form a permanent and long-lasting repair. Never has it been easier or more convenient to treat and fix problems in your car’s cooling system.

Simply pour and fix, it couldn’t be easier. Radweld then works its way through the system to target radiator leaks without damaging or clogging the system.

No matter where the leak or problem area is within your car’s cooling system, Radweld’s specialist formula will seek out holes, cracks and areas of abrasion, bonding to the material to form a permanent repair. The product is applied directly to the coolant/antifreeze reservoir without the need to flush the system, for complete convenience.

Name: Holts Radweld 125ml
Manufacturer’s Code: RW4R
Name: Holts Radweld 250ml
Manufacturer’s Code: RW2R
How to Use:

Ensure that the vehicle’s engine is cool before starting the repair process. Park the vehicle in a safe and well-ventilated area.

Before using Holts Radweld, shake the bottle thoroughly to ensure that the contents are well-mixed.

With the engine turned off, pour the appropriate amount of Radweld directly into the radiator or coolant reservoir. Refer to the product label for the recommended dosage based on the system’s capacity.

After adding Radweld, top up the cooling system with the appropriate type of coolant to the recommended level. Ensure that the radiator or coolant reservoir is filled to the specified capacity.

Start the engine and let it run for approximately 10-15 minutes to allow the Radweld to circulate through the cooling system and reach the leak.

After running the engine, monitor the cooling system for any signs of leaks. Keep an eye on the previously identified leak site to see if the Radweld has effectively sealed the leak. It may take some time for the sealant to fully take effect.

SDS Information

Yes, you can use Holts Radweld before an MOT. A leaking radiator can be expensive to repair, and could cause your car to fail its MOT, so solving the problem at home first can be an ideal solution.

An MOT inspection is a thorough test of your vehicle’s roadworthiness, so if there are other problems with your vehicle, the MOT tester may still recommend additional work is carried out before it is passed. Using Radweld doesn’t guarantee your car will pass the MOT, but it will quickly and permanently repair leaks and help you to avoid costly radiator repairs.

We would advise checking with the provider of your warranty before attempting a repair of any type. Like all of the Holts long-term or permanent repair products, it is important to check the details of your warranty before you use them in case you risk invalidating it.

Holts Radweld is a safe and permanent way to repair your car’s radiator in minutes. Holts Radweld is designed to cause no damage and can be used without flushing the cooling system, making it easy to use on your driveway.

If your car is still under warranty, however, you should check the details and work out the best option for you before you use Radweld.

If you’re looking for a quick, easy, and cost-effective solution to a leaky radiator, look no further than Radweld. It’s one of our most popular products, and drivers have been using it for decades to repair leaks in radiators.

Radweld works its way through the system, seeking out leaks and forming permanent repairs in minutes. Radweld has been carefully formulated to mix with all engine coolant and antifreeze types, and works quickly to fill small holes and gaps, resealing the system to permanently repair leaks.

Radweld can be poured directly into the cooling system, with no need to drain or flush the system first. The product also provides anti-corrosion protection and prevents future leaks; it will last the lifetime of the coolant in the system.

Radweld permanently fixes leaks without damaging your radiator, so you can simply pour and go, and feel confident that your radiator is fixed and free from leaks. While Radweld has anti-corrosive properties, we can’t guarantee that your radiator will never need replacing, as there could be unrelated problems further down the line.

Yes, Radweld provides a permanent repair for small cracks, holes, and leaks in your car’s radiator. The solution provides a permanent, water-tight seal, so you can get back on the road without worrying about further breakdowns or expensive repair bills.

Holts Radweld in Use

Radweld is designed to be added directly into the engine’s expansion tank. You don’t need to drain or flush the system before you use it – just pour and go. Radweld works through the radiator channels to seal leaks without any clogging or damaging effects, so all you need to do is pour it in and let it repair the leak.

When adding Radweld, it is important to ensure the engine has cooled before unscrewing the cap of the expansion tank as the coolant operates at around 90°C. After filling with Radweld, make sure that the cap of the expansion tank is replaced and tightened.

No, Radweld has been developed to ensure that it never blocks the channels in a car’s radiators. Using decades of experience and a thorough
research and testing process, the skilled team at Holts have produced a formula which will seek out and repair leaks in the radiator without clogging up the channels or causing damage.

Our dedicated product development team have specialist car knowledge and work hard to make sure each of products performs for you on the road. You can meet the team and read more about them here. We also develop products which are used and trusted by mechanics, so you can be confident that Holts gives you professional quality.

Radweld has been tested and endorsed by mechanics, and you can read some of their comments here.

Radweld was one of Holts’ original products and has been trusted by motorists for decades. With our expert team constantly testing and improving our products in line with automotive developments, you can be sure that Radweld will perform as promised without damaging your car.

No, Radweld has been developed to ensure that it never blocks the channels in a car’s radiators.

The product is safe to use in all cars, cooling systems, and alongside any brand of coolant/antifreeze. It’s guaranteed to not cause clogging in the system, so you can use it with confidence to repair small holes and leaks.

Radweld is proven to seal small holes, cracks and fissures from within the cooling system, providing a permanent repair for a fraction of the price of replacement parts.

Steam from your radiator and an overheating engine doesn’t have to ruin your day or cost a fortune to repair. With its advanced formula, Holts Radweld will target leaks in your car’s cooling system, safely sealing gaps and holes without causing any damage or clogging within the engine.

 

  • Stops leaks in radiators and hoses
  • Seals in minutes with no clogging or damaging effects
  • Prevents future leaks
  • Simply pour for a repair in minutes

 

Radweld is suitable for all cars and mixes with all types of coolant/antifreeze already in the cooling system. You don’t need any special preparation to use Radweld and there’s no need to drain or flush the cooling system.

Radweld also prevents future leaks to help keep your car on the road for longer. By treating areas of corrosion and pitting at the source, the product effectively extends the life of your coolant/antifreeze and individual components within the cooling system, which helps to prevent future leaks while maintaining the efficacy of engine cooling for longer.

Holts develop products for you right here in the UK, based on the ever-changing needs of the car market, so they’re easy to use.

Radweld gets to work instantly, circulating through the cooling system to form a permanent and long-lasting repair. Never has it been easier or more convenient to treat and fix problems in your car’s cooling system.

Simply pour and fix, it couldn’t be easier. Radweld then works its way through the system to target radiator leaks without damaging or clogging the system.

No matter where the leak or problem area is within your car’s cooling system, Radweld’s specialist formula will seek out holes, cracks and areas of abrasion, bonding to the material to form a permanent repair. The product is applied directly to the coolant/antifreeze reservoir without the need to flush the system, for complete convenience.

Radweld

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