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205 reviews
Superficially very effective
Whilst I cannot comment upon the long term efficiency of this product nor define any internal effects until such time as I strip down the engine, Radweld has effectively cured a significant leak in the radiator of my Jaguar X type. The system was losing about a litre every 10 miles (16Km) but has now been watertight for approximately 100 miles since I added Radweld. The efficiency of the cooling system and the heater appears to have been unaffected. This would seem to be a cheap alternative to the onerous task of replacing the radiator or removing it to affect a material repair.Read full review
Verified purchase: Yes • Condition: new • Sold by: simply.car
This stuff is brilliant.
Discovered that the car radiator had about 5 small leaks. Saw this Holt's Radweld for sale and as it was cheap I bought it, arrived two days later sorted radiator out and back driving half hour later. Can't recommend it enough. + I only used one bottle, so the other one stays in the boot, just in case I or someone else needs it.Read full review
Verified purchase: Yes • Condition: new • Sold by: fixra_uk
A 'Just in case' product.
I've used this product in the past and it proved very effective, getting me where I needed to go. It's easy to use and not messy. I'd also recommend having a small tyre inflator pump too just to add/maintain pressure once your tyre stops leaking.
Because it's cheap and convenient I've bought again just in case. Read full review
Verified purchase: Yes • Condition: new • Sold by: honestismyname
Radiator leak
My radiator on a 2008 Toyota D4D TR 2.2 diesel was badly leaked . I gave this product a try and seems to be working will update in due course as it’s only a few days I poured it in
Verified purchase: Yes • Condition: new • Sold by: real*shopping
Fiat Bravo losing water
Fiat loosing water was filling radiator every 3 weeks at first then I was filling it twice a week couldn't find any obvious signs anywhere no wet patches on ground etc. Thought I would give rad weld a try before making an expensive trip to a mechanic and it worked, used it 9 days ago followed instructions on the bottle and I've still got a full radiator would DEFINITELY RECOMMEND Read full review
Verified purchase: Yes • Condition: new • Sold by: fixra_uk
It mended the hole
It mended the hole when I could not see it. It did what was required, without being exciting. Attached is an ill-lit picture of the empty can. I am clearly better with the radweld than I am with the camera; I have to find out what ISO is.Read full review
Radiator fix
This product came as promised and in the time promised. However the mechanic found a hole in my radiator so put a new one on. He did say Radweld is really only for use in an emergency situation to get you to a garage, similar to tyreweld is used for temporary fix to tyre to get you to a garage. So I never used the Radweld.Read full review
I recommend Radweld....
So far, so good... I had an annoying small leak from my trusty BMW, and having used Radweld some time ago on a different car, gave it a try! Low and behold, it seems to have now gone! Thank you, so far... So good.Read full review
Verified purchase: Yes • Condition: new • Sold by: keywaydistri0
It does exactly what it says on the bottle.
It will stop most leaks in the cooling system,to keep you motoring until you can get the leaking parts replaced .
Verified purchase: Yes • Condition: new • Sold by: directretailoutlet
Excellent product, great value. Finds & ...
Excellent product, great value. Finds & seals small holes in the cooling sytem & radiators very quickly. Looks to be a permanrnt fix once sealed.
Verified purchase: Yes • Condition: new • Sold by: redlabeloutletltd