


🛠️ Fix leaks fast, drive stress-free!
Holts LOYRW2R Radweld Cooling System Stop Leak & Radiator Repair (250ml) is a trusted, easy-to-use additive that quickly seals minor radiator and hose leaks without clogging or damage. With a proven formula and high customer satisfaction, it prevents future leaks and saves costly repairs, making it a must-have for proactive vehicle maintenance.


| ASIN | B000X2CR74 |
| Best Sellers Rank | 795 in Automotive ( See Top 100 in Automotive ) 7 in Fillers, Adhesives & Sealants |
| Brand | Holts |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,353) |
| Date First Available | 5 Oct. 2007 |
| Item Weight | 259 g |
| Item model number | LOYRW2R |
| Manufacturer | HOLTS |
| Manufacturer part number | RW2R |
| Model | LOYRW2R |
| Product Dimensions | 14 x 7 x 4 cm; 258.55 g |
C**D
Works well and stops radiator leaks
I used this when the radiator of my 2007 Triumph Sprint ST started to leak slightly. Followed the instructions and it worked. Totally stopping the leak. I have to say it was a small leak, caught pretty early and I suspect this won't work form anything major but it certainly worked for me and saved a physical repair or even replacement radiator.
P**A
Works like a charm
Work like a charm- I poured inside my radiator as opposed to instruction. Still works for me
C**9
Worked a treat for a (temporary) repair
Great stuff. I had a coolant leak on a diesel Smart ForTwo , caused by deterioration of the EGR charge cooler. Coolant loss was to high to risk driving the car to my preferred specialist ... but a dose of Radweld worked an absolute treat and plugged the leak completely. A quick local test drive proved all ok, so I took the chance to drive the car and had absolutely no issues whatsoever. Now its tempting to consider this as a full fix as the car performed 100%, but clearly there's chance of the repair breaking down and a risk I couldn't take, hence the proper repair will be done, but as a "get of jail" fix, the few quid of this stuff was certainly worth a punt (worthy of 5 stars but rated at 4 only because I can't determine how permanent such a "fix" would be).
D**S
Excellent
Excellent
S**E
Radweld
Worked a treat
L**L
Good for a short while
Worked for a while, but not a long term solution. Ended up replacing the radiator in the end.
C**D
Brilliant
Absolutely brilliant for small leaks
K**R
good value
good price and delivery
T**Y
It worked! I had a very small leak in my VW. It would take a few days for "low coolant" light to come on the dashboard after topping up. I dreaded taking it to a mechanic ($$$). I found this after some research and for the price, I thought "why not?". I followed the instructions and things looked good for a few hours but there I notice low coolant the day after. I was worried but I topped it up and it's been perfect since!
R**L
Ho saputo di questo prodotto per molti anni. Usato una volta nel nostro veicolo molto tempo fa. Funziona davvero e avete solo bisogno di fare una volta. Problema risolto. Non ha esitato a comprare di nuovo quando un problema simile si è verificato su un altro veicolo.
M**J
Tras leer infinidad de opiniones sobre otros productos parecidos y buscar información en foros me decidí a probar este por sus buenas críticas en USA donde la mayoría son vehículos automáticos de gran cilindrada los cuales exigen más presión en circuitos etc, el mio es un Saab 93 Turbo automático 175cv Gasolina y perdía todo el líquido del bote expansor en una semana, tras varios intentos de pedir cita sin éxito en un taller para repararlo lo antes posible decidí probar temporalmente con este producto, lo primero que se aprecia es que no tiene particulas flotando como los otros productos que he visto al estilo del nural70, el caso es que a los 20 minutos de vaciarlo en el bote expansor y dar una vuelta con el desapareció la fuga, ni rastro de ella, no se cual será el secreto ya que como digo no tiene esas partículas como otros productos que supuestamente van tapando las fugas del circuito, solo quiero usarlo como solución temporal hasta que lleguen los recambios para mí vehículo pero probablemente lo dejé más tiempo así para testar su efectividad lo mas tiempo posible,conclusión: Es una solución temporal estupendas si no te fías de los típicos productos que tienen partículas dentro, dentro de un mes comentaré de nuevo. Edito un año después a dia 4/02/2018 Después de un año mi vehiculo a vuelto a perder liquido refrigerante ya que no lo reparé puesto que no perdia ni una gota y por poco mas de 5 euros me parece magnifico que aguante todo un año, he vuelto a comprarlo y lo usaré de nuevo haber si vuelve a funcionar y si no tocará pasar por el taller.
W**H
Ich habe bei meinem Subaru Impreza auf ca 500km immer deutlichen Kühlmittel Verlust im Ausgleichsbehälter feststellen können. Ich habe dann erstmal nach Lecks und ähnlichem geschaut aber nichts gefunden. Dann wurde mir von einem Bekannten dieses Produkt empfohlen. Ich habe nach dem einfüllen der halben Flasche gleich eine Fahrt von 60km gemacht und den Kühlwasserverlust weiter beobachtet. Ich musste dann nochmal nach ca 500km ein bisschen normales Wasser nachfüllen und danach war nach den nächsten 5000km kein Verlust mehr Sichtbar.
G**S
It did absolutely nothing, I was so excited as my problem is only a small issues and i though this would work. as i said it did nothing. At least it did not make things worse. As i did some research and read some horror story on how it ruined some engine. Just wish it would have worked for me
Trustpilot
2 days ago
3 weeks ago