Holts Radweld is a fast-acting, DIY radiator leak repair solution that effectively seals small leaks in radiators, hoses, and the entire cooling system.
Stops leaks in minutes without clogging or causing damage.
Works instantly to repair holes, cracks, and fissures from within the cooling system.
Prevents future leaks by treating corrosion and extending the life of coolant and engine components.
Compatible with all types of coolant and antifreeze.
Why Choose Holts Radweld?
Provides a permanent repair for small leaks at a fraction of the cost of replacement parts.
Safe for use in all cars, with no need to drain or flush the system.
Easy-to-use formula – just pour and go for a quick fix.
Developed in the UK to meet the needs of modern vehicles.
Helps maintain engine cooling efficiency and prevents overheating.
How To Use
Ensure the engine is cool before starting the repair process.
Shake the bottle thoroughly to mix the contents.
With the engine off, pour the recommended amount of Radweld directly into the radiator or coolant reservoir.
Top up the system with the appropriate coolant if necessary.
Start the engine and let it run for 10-15 minutes to allow Radweld to circulate and seal leaks.
Monitor the system for any remaining leaks and check coolant levels after the repair.
Holts Radweld is the **trusted, easy-to-use solution** for sealing radiator leaks and preventing future issues. Keep your car running smoothly and avoid expensive repairs with this **fast, permanent fix**.
