You’ve heard about how Steel Seal is the premier head gasket repair product, now hear what people are saying! Steel Seal has been used successfully by thousands of mechanics and customers alike to fix blown head gaskets in everything from cars and trucks to boats, big rigs, and heavy construction equipment. Searching for engine block sealer reviews? See below to hear about their experience with Steel Seal.

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Average rating:  
 125 reviews
by Joe Ausfahl on Steel Seal
Unbelievable Miracle for me
Make, Model, Year: 2005 Cadillac DeVille

The classic Northstar-engine-blown-headgasket-syndrome. Every product on the parts store shelves and online e-stores had been tried at least once and some more than once -- All Failures. Some of these products, like BlueDevil, even included tech-support-with-a-bad-attitude - perhaps Blue Devil will message me for some free customer contact info.
Steel Seal did have the higher initial cost but WOW did it have the best value (because it totally 100% Worked Like Magic).
Before Steel Seal my overheating problem was terrible and the car undriveable. I still haven't put the final 50-50 Prestone Ethylene Glycol mix in the cooling system and the car runs cool as can be in bumper to bumper city driving in 90+ degrees and no wind. Baking hot. Car is cool.
Two things I wasn't prepared for . . . one is how good the excellent tech support team turned out to be (just like they said call anytime and I did), Dave Whitmer was who I was coaching me across the entire flushing and repairing and final flushing. The result is working so well that I've gotten lazy on the final ethylene glycol refill
The other thing I wasn't ready for was the near explosive release when all of the past repairs, insufficient as they were, they all let go at once during the caustic flushing process. Like a splashing type boom!! And then the extent of exhaust gas suddenly escaping through the reservoir tank . . . it was so extreme it was kinda scary. Dave was there for me and scary or not I followed the process. I paid $250.00 for this fix. I would have paid $500.00 or a thousand if I knew it was THIS good. Can't say enough good about how happy I am with both the product and the people.

Joe Ausfahl
Tennessee Valley
rjsfhl@riverpearl.net

by Hamilton Chung on Steel Seal
Skeptical as first.
Make, Model, Year: 2007 Lexus RX350

I have a Auto Repair Business..Vehicle was towed in from the Dealership to my shop Customer coudnt afford the repairs Blown head gasket. white smoke coming out of the muffler,engine had rough idle,check engine light flashing and also vehicle had extended cranking wouldnt start right away.I pulled out all 6 spark plugs the rear spark plugs intake plenum has to be removed.I ran compression and checked for coolant on spark plugs. front spark plugs all clean no coolant on spark plugs cylinders 2,4,6..excellent compression 120 psi. rear spark plugs no coolant on spark plugs. cylinder 1 120 psi compression. 3 and 5 right next to each other low compression about 90 psi.I put everything back together.I heard about steel seal on you tube never tried it. I tried blue devil,bars leak and k&w pour in head gasket repair liquid.all have failed..I decided to order steel seal and give it a try i was skeptical..I did tell the customer I will try steel seal maybe it will work maybe it wont.she gave me approval lets give it a shot. while waiting for the product to arrive in the mail. i flushed the cooling system with straight water and removed the removed the thermostat.reinstalled the thermostat housing with thermostat removed.product came in the mail 2 days later.i poured steel seal in the radiator with straight water and bleed the cooling system. poured water in until water drips out of bleeder valve.Started the vehicle rough idle white smoke. drove on highway..about less in a mile no over heating engine was riding smooth.. I continued to drive 15 miles on the highway no over heating just crusing..I returned back to the shop No white smoke coming out of muffler..I reved the engine in park super strong Idle was also perfect.I shut the vehicle off let it cool down topped with water and water wetter..drove the vehicle around 3 days..vehicle never over heated no more white smoke..I called customer told her to pick up the vehicle..I told her to return back in 2 weeks so i can put the thermostat back in..Customer was Happy she told me she saved over thousands of Dollars..I WAS SKEPICAL AT FIRST BUT STEEL SEAL IS AMAZING WORKS! K&W, BARS LEAK AND BLUE DEVIL IS GARBAGE DONT WASTE YOUR MONEY ON THOSE PRODUCTS.BUY STEEL SEAL!

by barrie pearce on Steel Seal
steel seal back pressure
Make, Model, Year: ford focus 1.8 2003

Brought yesterday as my car had back pressure and heating up way to quickly followed all instructions and now my car works a dream no more pressure in expcation tank will update after I go for a long drive today and will recommend product to family and friends I am a self imployed macanic thank you very much for your product

by SR Conroy on Steel Seal
FANTASTIC
Make, Model, Year: 1998 Chevy S-10

This is my second use of Steel Seal, the first was in my Mother's car which she sold a year and a half After treated, and All was still Well. 2 Years ago I used it in 1998 Chevy S-10, 4.3 Liter V-6, I have purposely waited 2 years to place my Review on my S-10 so I could report a longer period of usage !I have no idea what is in this Product, but I will tell you that it worked 100% for ME,,,, 2 out of 2 times I used it,, in my Truck it has been 2 years, and NO SIGN of a problem !It is so Rare today that you can trust a product's Claims, But Take MY word,,, THIS STUFF Does EXACTLY What they SAY it DOES,,, THANKS STEEL SEAL !!!! Wish I would have known about you when I had my 1980 6.2 Diesel pickup !!!

by Jimmy R on Steel Seal
Worth every penny!!!!
Make, Model, Year: 1998 BMW 540i

Purchased Steelseal back in 2010 for my 540i BMW after contemplating junking my car...to my surprise its 2017 and my car is still running. I can't say enough about this wonderfully engineered product, GENIUS!!! Saved me thousands of $$$, not a believer?? Try it yourself , you got nothing to lose with their Money Back Guarantee!!

by Scott on Steel Seal
Amazing Liquid
Make, Model, Year: Chevy,Venture,2004

I bought a bottle of it back in 2014 for my Chevy Venture that was blowing steam out of the exhaust pipe. i followed the instruction to the tee. It worked just like they said it would. Now 40000 miles later the van is starting to overheat, So i called up tech support and talked to Robert (Very nice & knowledgable person). Then like the Warranty states they will send you out another bottle for free.

by Geoff Smith on Steel Seal
Steal Seal
Make, Model, Year: Peugeot 307 petrol

I have just used Steel Seal as my daughters car head gasket had gone via the rac mechanic, I I should have drained the old antifreeze fluid and now for the 2nd time am going to use the steel seal again and see how it goes very good back up from company and highly Recommended to use

by Joe on Steel Seal
Steel Seal Works!
Make, Model, Year: 2004 Chevy Silverado

I used steel seal in my 04 Chevy five years ago. It worked great until a few weeks ago so I requested more. They gladly sent the new elite steel seal. Worked like a charm. Thanks for a great product and great customer service.

by Steve O'Brien on Steel Seal
It Worked
Make, Model, Year: Subaru Outback 98

In Autumn 2016 I had to keep adding radiator anti-freeze and the car developed overheating problem .....the shop said it was a leaking head gasket and would be 1,800 to fix .....the car ran , started very good , I had put 70,000 mi tires on it , but that price was too high ... then I remembered I had seen Steel Seal recommended on a Youtube video a couple of years ago by a mechanic I highly trust ...... I found this website , called and spoke to Robert .... he was quite nice and knowledgeable ... so I bought it ... I had the shop do the treatment using the simple instructions that came with it ...... Got the car back the next morning , 2 days after Thanksgiving ...... it worked , first try ...... it continues to run good , problem free 2 + months later .... am very happy

by Arlan on Steel Seal
Amazed how it worked
Make, Model, Year: 1998 Jeep

I just witnessed Steel Seal being used on a jeep with visible head coolant leak and engine miss. After 30 seconds of putting steel seal into the coolant and starting engine the visible coolant leakage stopped and the engine miss stopped! It was amazing to see it work.

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