K-Seal Ultimate Head Gasket & Block Repair | Seal & Fix Coolant Leaks, 472ml

Had a coolant leak, poured this stuff in, drove about few times, leak was gone. I had been topping up coolant and I would hear a chugging sound ( where air would be getting in from the leak), when I poured this stuff in there was 2 chuggs and then it stopped, this stuff basically starts working right away

The product works great, had to unfortunately use it on my stage 3 3l a5 diesel. Temporary fix, While while I rebuild the engine, but it worked immediately, I have tried others, steel seal etc. None worked except this, however, I do believe it did damage the thermostat, but I can't say it definitely was this. Recommend.

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.

Absolute Rubbish . As fast as I poured it in , it came out ? If I obtain a refund it will go to Charity.

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.

Not sure how many stars to give this?? I have a BMW X5 4.8is V8 Petrol. I am losing water - but only a tiny bit poss 0.25L each week. Slight steam from exhaust when idling but again not much & hard to tell if coolant. No water in oil & no oil in water... I can only imagine it must be a tiny head gasket problem. Mechanic says no leaks. Car still drives like a dream. I have dosed the engine with one of these and given other positive reviews you would think that it would have done the trick? Maybe with the engine size I need 2 lots - however do not want to waste another £24 if it does not do the trick - really stuck - any wisdom on here? also noticed product says money back if it does not work - I wonder how to invoke that if I buy another and no joy? M

A leak on the coolant inlet manifold on my jag stype,, part cost £40 but quoted £1000 plus for labour, thought I would give this a go after watching a sales ad , said it would also work on plastics, I really didn't have much hope , but bloody hell it worked, I was having to top up after a run of only a few miles, very noticeable leak , now nothing, not a drop ,couple of hundred miles now and still all good, fingers crossed, excellent product, worked for me , would recommend

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

Ho prima messo a livello l'acqua nella vaschetta a motore freddo, ho tolto la quantità d'aqua dalla vaschetta pari al prodotto, ho versato il prodotto nella vaschetta , ho avviato il motore METTENTO LA STUFA A CIRLCOLO ARIA CALDA , ho fatto riscaldare da fermo il motore fino a 80 gradi poi ho circolato per 3/4 km . ho spento e fatto raffreddare 5/6 ore. dopo di che ho usato la vettura regolarmente. IL PRODOTTO HA FUNZIONATO. La vettura è una Fiat stilo SW 140cv Multijet con 450.000 aveva soffiatura alla testata che mi consumava circa 150ml di acqua ogni 100 km (un bel bichiere di acqua) cacciando fumo bianco dalla marmitta. Ora dope Tre giorni ho percorso circa 560 km NON CACCIA FUMO BIANCO NE CONSUMA PIU ACQUA: al momento va benissimo non so quanto duri . comunque ho rimandato la rottamazione!!!

Subaru Outback 2.5 l anée 2000, 210.000 km. Elle perdé l’anticongelant par la joint de culasse en grande cantité (odeur, fumée dessous le capot). J’utilisé K-Seal Ultimate et le problème a été corrigé. 3 semaines plus tard il n’y a le moindre symptôme du problème.

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

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.

Head gasket and it worked