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:  
 135 reviews
by harry scott on Steel Seal
best formula ever
Make, Model, Year: ford f-150 1997

just love it my truck has been run great best formula ever i strongly recommend this to anyone with bad head gasket and need it repaired my truck has 317 k miles and still going

by GRAHAM on Steel Seal
Make, Model, Year: 2003 corsa

been in the motor trade over 50 years white smoke milky oil did not think steel seal would fix this but you proved me wrong its now running fine

by Ed Lucas on Steel Seal
It Works
Make, Model, Year: Mitsubishi Shogun Sport 2.5 diesel

I had been having an annoying minor loss of coolant for some time. I needed to replace a litre of fluid every diesel fill up. After replacing all hoses and gaining nothing a visit to You Tube indicated I should be looking at the head gasket.
Needless to say, having verified it was a minor Gasket leak I Bought Steel Seal. This had to work as it would not be financially viable to have a professional replace the head Gasket. And it did work. 800 miles further along and going strong with no top ups required.

by DAVID OKOTH KIDI on Steel Seal
Make, Model, Year: NISSAN SUNNY

I searched for this product on the Internet and I had a chance to send someone who was traveling to London. It was bought at Halfords stores, London. I must say that I followed the instructions to the later and it is now four weeks and my car is ok. Thanks

by Ricky Jones on Steel Seal
Steelseal works
Make, Model, Year: 96 ford ranger

Had a blown head on cylinder one a motor was gonna cost $400.00 and a head was gonna cost $350.00 than I herd about steelseal for $98.00 so I ordered it and to my amazement it worked so I am a true believer of steelseal
Ricky Jones

by Brian on Steel Seal
Saved 3-5k!
Make, Model, Year: Ford V8, Club Wagon, 1998

Simply it worked. If you have any questions make the call, the guys were very helpful. I was forced into finding an affordable solution because the estimate to fix the head gasket was 3-5k, I only paid 1800 for the van! I decided to try this after trying two other products that didn't work. Then I saw a YouTube video of what the Steel Seal looked like after the product was used and the engine was taken apart. It made a lot more sense seeing how it worked so I ordered the product and called support to find out more. Again, super helpful. The issue I had was common problems with a bad head gasket. Coolant loss, weird heating issues, water leaking into a cylinder, miss fire error and pulling the spark plug it was dripping wet. There was also very moist white exhaust. The misfire error disappeared almost instantly and checking one time after first use the plug was dry. Then I kept the product in the radiator system for about a week. It’s been about 3k miles now and with one long 6 hour road trip down I consider it fixed and switched back to 2yr coolant in the radiator. The van hasn’t run this good since I bought it with 300+k miles now it seems to be running like new. I rewarded myself with some new tools since I saved thousands.

by Mike H on Steel Seal
Make, Model, Year: 2004 Infiniti G35

I don't normally go out of my way to review a product unless if it is not adequate. That said, Steel Seal is such an incredible product that I had to share my anecdote of success. This is the second time I have bought Steel Seal sto repair my blown head gaskets. I first bought Steel Seal 2 years ago when my 97 Subaru Legacy was getting airlocked from all the compression gas in my cooling system. I followed the instructions provided and it sealed the gasket up right away! I was a little worried that it wouldn't work on my Infiniti because the thermostat is designed as one piece with it's housing, and therefore wouldn't be able to bypass thermostat for steady flow in the cooling system. But I gave it a shot and BOOM! That nagging head gasket slowly but surely sealed up in my G35 as well. I would recommend this product to anyone as it has literally saved me thousands of dollars. With a money back guarantee like theirs, why wouldn't you give it a try!!

Now this product does not work if there is a leak between cylinders, but for all other leaks, this product WILL work. I know it has for me...

by John on Steel Seal
It Works!
Make, Model, Year: 2000 Cadillac DeVille

First used Steel Seal around 2009 to fix overheating engine. Worked as advertised. Great. Then had a reoccurance this Spring. Turns out an original part used was made out of a plastic material. Over time, the extreme heat caused the part to fail. Steel Seal explained the issue and sent a replacement part made of metal. It arrived in two days and completely solved the problem. No cost to me. Customer service was terrific. Couldn't be more pleased with the company or the product.

by Mike alley on Steel Seal
3 year update
Make, Model, Year: 1990 honda accord

I put steel seal in over 3 years ago and still no need at replace the head gasket

by Steve Toepfer on Steel Seal
Make, Model, Year: Ram 3500 diesel,2002

Kept losing antifreeze. Did some background and called a garage in Iowa that had success on a Ram diesel several years earlier so I gave it a try. It's been 3 years or more and it's done what it claimed. No problems. No more overheating.

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