5.0 out of 5 stars goof

A.C. · 11 June 2025

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1.0 out of 5 stars Wasted money...

A.C. · 10 June 2025

Made it worse, bought it knowing won't do much but said to try it, think is good for small leaks but not head gasket pressurising, not cheap either.

5.0 out of 5 stars worked a treat for me !!

A.C. · 18 July 2024

My trusty 1996 Diesel car of 17 years had to be sold due to the stupid and criminal extension of ULEZ (extended outside of the A406, by the London Mayor). Unfortunately the replacement vehicle I bought (it wasn't obvious at first) had a suspect blown head gasket , I thought the slight oil in the coolant was due to lack of maintenance/servicing by the previous owner & the broken seals on the oil cooler - there were no other head failure gasket symptoms . Also a co2 head tester test showed negative to head gasket issues.6 months after the purchase, the oil management light came on. Diagnostics showed cylinder 2 misfiring. I replaced all the spark plus & ignition coils, the light disappeared for a day , but came back again. My local garage took out the spark plug to cylinder 2 & used some sort of Otoscope to peer into the cylinder and saw coolant in there. He recommended K-seal. I read reviews and results seem to be 50/50, (I presume it depends on the seriousness of the gasket damage, how successful this treatment will be) . But for my Nissan Xtrail 2.5 litre Petrol engine this worked a treat. No vibrating when i started the car, the car ran smoothly. Whether K-Seal would last for a long time, I cant say, I had a road trip planned and wasnt going to risk it, but definitely as a stop gap till i got another car, this worked brilliantly. Its a gamble, but even for the price (£32) I would definitely sue this product again as a stop gab or to get me out of a tricky situation ie getting home rather than being stranded. As for the long term issues with having this in your engine, some say its ok, some say its not great for the cooler system, but for an older car my feeling would be 'why not use it, especially as a stop gab.

4.0 out of 5 stars This will work for some applications

A.C. · 16 February 2024

But in my case it did not work fully. I think it reduced the problem somewhat but I can't dismiss it entirely as I can't be certain what was causing my problem. At the price, it's got to be worth a try.

3.0 out of 5 stars Did not work

A.C. · 13 March 2024

Did not work for my Ford Focus 1.0 litre eco boost. I think this works with some cars and some cars it doesn’t.

5.0 out of 5 stars Took the Gamble

A.C. · 1 February 2023

Stopped the coolant Leaking from Engine on a Landrover freelander 2005 Petrol with confirmed headgasket leak feel free to read on,I had headgasket failure symptoms on my car it's done over 115,000 miles and already had 2 headgasket replacements in it's life the last at 96,000 no way was I spending anymore big money on that thing I used a sniff test (separate purchase) and the fluid went yellow and a strange thing was the coolant was leaking slightly from mid Engine at the front it could even have a craked block or warping it's unusual to leak externally, I ran K seal and after seconds the leak has stopped and not losing anymore coolant. Luckily it's only needed for very short journey to work so I'll live with it like this until it dies i for sure wouldn't use it if I had a nicer car I'd get it fixed or if I was far from home I'd definitely use it to get back just read instructions carefully and there isn't really any risk of any blockages which had me worried.I'd say use if the car is beyond economical repair this has gave me time to save up

2.0 out of 5 stars Last 1 month maybe 2

A.C. · 27 July 2023

Says you only need 1 bottle or money back, i used 1 every couple of months as it doesnt permanantly fix the problem but while im looking for another car i have to use this ive had quite a few bottles now so dont know if the engine will last ...itll get you away as a quick fix but not permanant fix

5.0 out of 5 stars Great

A.C. · 5 March 2025

Good item, works

Fortunatamente c'è la garanzia

A.C. · 15 June 2015

(function() { P.when('cr-A', 'ready').execute(function(A) { if(typeof A.toggleExpanderAriaLabel === 'function') { A.toggleExpanderAriaLabel('review_text_read_more', 'Read more of this review', 'Read less of this review'); } }); })(); .review-text-read-more-expander:focus-visible { outline: 2px solid #2162a1; outline-offset: 2px; border-radius: 5px; } Nel mio caso il prodotto non è servito a nulla, ma ho potuto beneficiare della garanzia dopo aver contattato la casa produttrice (davvero gentili ed efficienti) ed aver ottenuto informazioni sulla notevole documentazione richiesta per avviare la pratica. Probabilmente ogni auto fa storia a sè, quindi non posso escludere che a qualcuno questo liquido apporti effettivamente dei benefici. In ogni caso avere la possibilità di rientrare dalla non indifferente spesa è sicuramente un valore aggiunto (e per questo ho assegnato la seconda stella).

Very good

A.C. · 13 January 2024

Good product work on my car now .now to gas prblm everthing stop

Calidad precio y buen resultado

A.C. · 13 July 2018

La verdad que ha funcionado tenía un poro, le echamos el líquido hicimos 25 km como nos recomendaron y de verdad que lo notamos el coche tiraba mucho mejor, fácil de poner.

Ut worked

A.C. · 28 January 2025

Head gasket and it worked

Signed and Sealed

A.C. · 22 July 2023

Used this on my 2005 Camry for a temporary fix on what I think is a head gasket or heater core issue.Made my car run better and will run through for 1000kms and reflush.Not a permanent fix. However will do until I decide if I want to buy another car.Great product and would highly recommend5 stars