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🛡️ Seal the deal on engine leaks—drive worry-free with Steel Seal!
Steel Seal is a top-rated, award-winning pour-in solution designed to permanently repair all types of side leaks in water-cooled engines. Compatible with all blue antifreeze types and standard coolant mixes, it requires no disassembly and prevents cooling system blockages thanks to its unique filler-free thermochemical bonding formula. Ideal for cars, trucks, SUVs, tractors, and more, Steel Seal offers quick, reliable repairs tailored by engine size, making it the go-to choice for professionals and enthusiasts alike.











| Asin | B004BU44H0 |
| Best Sellers Rank | 19,548 in Automotive (See Top 100 in Automotive) 209 in Fillers, Adhesives & Sealants |
| Brand | Steel Seal |
| Customer Reviews | 4.1 4.1 out of 5 stars (532) 4.1 out of 5 stars |
| Item Shape | Round |
| Manufacturer | STEELSEAL |
| Manufacturer Part Number | SSAT |
| Material | Alloy Steel |
| Model Number | 5052665000005 |
| Number Of Items | 1 |
User
A final option, still working.
Had head gasket replaced, which cured coolant leak into oil for about 1 month only, and cost £860. Flushed system and added Steel Seal 9 weeks ago, and all is still good at present. Wish I had just done this the first time, and saved myself the £860.
User
Drain out your red antifreeze
Most important you will get a horrible gel if you don’t drain and flush with fresh water. Worked well for a season, stopped pressurisation. Signs now that it may be wearing off. Still, I’m prepared for an annual bottle as sooo much cheaper than a head gasket job on a banger
User
Works
This stuff does work, how long for I don't know time will tell.Bought for my partners car as she was losing water somewhere, I put this in following the ideal procedure water out, engine flush, and adding back into the system, allowing to circulate round the engine.She's not lost any coolant upto now and its been over a week.Was very sceptical being a 40 quid bottle over what could be an expensive repair job but upto now it seems to have done what it needs to.
User
Follow the instructions
100% saved the day thanks
User
Save your money
Wouldn’t bother. Basically turns to a wallpaper paste consistency, leak didn’t seal and the coolant pipes, thermostat were caked in a thick glue like material.
User
Coolant leak
It didn't work on my car for the job needed.
User
Highly recommend
This stuff worked for about 6-7 months when I contacted the seller (steal seal) they where more than happy to stick to there policy of lifetime guarantee and after I sent in proof of purchase and a claims form they sent out a new bottle. I will recommend this product to anyone in a sticky situation and needs a quick fix for there head gasket. My
User
Almost worked
I wasn't sure if this would work as I was losing about 170ml of coolant a day and had water in the oil. I used this product as directed, took it for a few miles drive, let the engine cool and topped up with water to the fill line. I checked the coolant level after a few days and it was ever so slightly below the fill line. I can still smell exhaust fumes inside the cabin when idling which suggests that exhaust gases are seeping into the heater matrix so it hasn't fixed it fully but I think it may have bought me a little time. I'm scrapping the car soon anyway I just need it to survive another few months until I can afford another car.
User
Unglaublich aber knapp 700€ Gespart Dank Steel seal
Hallo ,also ich hab ohne zu übertreibennoch nie zuvor was vergleichbar effektives gesehen.Wir waren (ein paar Tage bevor ich Steel seal gekauft habe )in einer Auto Werkstatt mit unserem Opel Astra turbo j 1.4 ,wegen ständigem Kühlmittel Verlust und auch wegen klingelnder Motor Geräusche.Die Aussage der Werkstatt Zylinderkopf Dichtung defekt und weitere Dichtungen im Motor inneren.Einzigste Möglichkeit alles auseinander nehmen und Alle Dichtungen tauschen .Alles für nur 800€ kotz nur 800 € Hahaha.Und dann hab ich auf eigene Faust recherchiert und bin auf dieses Produkt gestossen .Der Preis von knapp 80€ war mir am Anfang nicht so geheuer ....Aber mir war letztendlich egal ob jetzt 800€ oder eben 80 € mehr ( falls das Produkt auch für'n A..... War).Aber nein ,alles wie auf der Flasche beschrieben durchgeführt und schon während der ersten halbe Stunde im Reperatur (Standgas Modus );) konnte Mann deutliche Veränderungen der Motor Geräusche hören . Der Motor wurde simpel gesagt wieder um einiges leiser und lief auch wieder viel ruhiger und runder .Und die Kühlflussigkeit bleibt auch wieder da wo sie hingehört;)Also Daumen Hoch Top Produkt .
User
perfect , fixed small leak in head gasket
perfect , fixed small leak in head gasket
User
Did'nt work as expected
It didn't work as expected. just wondering how to apply for refund
User
E' come tirare una monetina...
Non ha funzionato su una Punto 188 1.2 8v del 2000: la temperatura dell'acqua sale ed entrano gas combusti nel circuito del refrigerante, perche' la guarnizione di testa e' rotta. Pur avendo drenato il vecchio refrigerante e usato solo acqua e SteelSeal e pur togliendo il termostato per far circolare subito il liquido, non ho ottenuto la sigillatura. Peccato perche' chiedono 450 euro per firare la guarnizione di testa.
User
God
God
Trustpilot
3 weeks ago
2 weeks ago