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Q: I used wondarweld. I have to drain cooling system?I dont want to add coolant I add just water ?if wondarweld stay in system causing damage in car?

You should follow the manufacturers instructions fully, as per the label on the bottle. It is essential to add coolant after treatment as this will help prevent your radiator overheating but also to prevent damage caused to engine/cooling systems at sub-zero temperatures. Water alone will freeze at zero celsius and if you do not use de-ionised or distilled water in your radiator, you are likely to introduce lime-scale and other impurities ito your cooling sytem. Coolant will also stop corrosion internally.

Q: I used wondarweld. I have to drain cooling system?I dont want to add coolant I add just water ?if wondarweld stay in system causing damage in car?

Drain and totally flush cooling system before using wondarweld. Wondarweld can stay in system afterwards. Did a brilliant job on my car.

Q: Will this work on a diesel engine that's pressuring the coolant system and putting the coolant out of the tank

It could not work or it could completely cure it. ..... or anything inbetween. If you do use it , make sure that you flush the coolant out first very thoroughly. It worked for me.

Q: I used Wondarweld twice, but it has not repaired the cracked block. Should the concentration increased for larger amounts of water in the system?

I tried various quick fix products to seal a crack in the head in my old car but none have completely stopped water dripping out. At best they have slowed the water loss, I followed the instructions to the letter. I am not sure increasing the concentration would help and may block other passageways. I am going to try and seal the crack from the outside, but then I do not have a pressurized cooling system. Good luck.

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🚀 Repair like a pro, save like a boss!

🚗 FIX IT YOURSELF - Say goodbye to costly garage visits!
🏆 TRUSTED EXPERTISE - Over 100 years of automotive excellence.
🔒 LEAK PROOF TECHNOLOGY - Seals cracks and holes permanently.
⏱️ TIME SAVING SOLUTION - Quick application for immediate results.
🌍 UNIVERSAL COMPATIBILITY - Works with all engine types.

HoltsWondarweld is a professional coolant leak repair solution designed to permanently seal small cracks and holes in various engine components. With a 500ml capacity, it offers a cost-effective alternative to expensive repairs, ensuring compatibility with all engine types. Backed by over a century of expertise, this product is your go-to for maintaining vehicle integrity.

Have a Question? See What Others Asked

I used wondarweld. I have to drain cooling system?I dont want to add coolant I add just water ?if wondarweld stay in system causing damage in car?

Will this work on a diesel engine that's pressuring the coolant system and putting the coolant out of the tank

I used Wondarweld twice, but it has not repaired the cracked block. Should the concentration increased for larger amounts of water in the system?

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