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:  
 156 reviews
by Michael on Steel Seal
Make, Model, Year: Audi, A4 1.8 T, 2000

After two months fighting to start my car (280000 km) in the morning, wearing down the battery until it finally started on 1-2 cylinders, I applied Steel Seal yesterday evening. First thing today was to start the engine and it started immediately on the first try on all 4 cylinders.
Would highly recommend this product.

by Max pople on Steel Seal
Good stuff
Make, Model, Year: Loads

Works very well only failed once on a transporter but then that was cursed! Cant fault steel seal

by Andrew on Steel Seal
It works
Make, Model, Year: 1999 subaru forester

I had exhaust fumes bubbling up through radiator, constant white smoke from tail pipe and was losing lots of coolant without any apparent leaks on my 99 subaru forester. First I tried K-seal, twice, which did not work at all. A friend told me steel seal had worked on her car so I decided to try it even though I was doubtful of any DIY instant fix treatments after my experience with K-seal. I used one bottle of steel seal and all of the symptoms I described have disappeared. So I can confidently say that steel seal indeed repaired the leak. That was only yesterday so I cannot testify to the longevity of the fix but am really happy to be on the road again and having avoided the huge cost of head gasket repair!

by Gary Garner on Steel Seal
Great product
Make, Model, Year: Ford, F-150, 1997

I bought this product about 6 years ago. Works great in my truck started having small problems again emailed the company. Free treatment was in my hand within a week. Put in truck as before truck running back like it should. Would easy recommend to anyone.

by Steven Ravenshear on Steel Seal
Works amazingly
Make, Model, Year: Proton jumbuck 2004, bmw e46 2003

I had a proton jumbuck that overheated and cracked the block and was running on 3 cylinders i used the treatment and within 30 minutes of putting in the treatment it came back onto 4 cylinders and lived on, the bmw had a suspected headgasket issue and the steelseal cured the car.
Would highly recommend this product

by Dan on Steel Seal
Saved my truck
Make, Model, Year: Nissan Titan 2004

Found out my head gasket was blown at 190,000 miles and the cost of repair would have been half the price of the truck. So I was pondering getting rid of it. Then I found Steel Seal, used it and it fixed my truck in less then 10 min and I put another 10,000 miles on it and its still running strong.

by Ron Fredrickson on Steel Seal
Amazing Product
Make, Model, Year: 2007 Toyota Prius

I was extremely skeptical but seeing all the videos on YouTube convinced me to give it a try. If it didn't work oh well. I used the product. And the car no longer uses water and runs perfectly. I will be buying this product for all my cars as preventative maintenance to avoid problems in the future. Outstanding customer service as well. Keep up the good work.

by Alex burns on Steel Seal
Great product
Make, Model, Year: 2002 audi a6 3.0 qu

Bought this product as my head gasket was on its way bubbling in the expansion tank
Drained the coolant and filled up with fresh coolant and added steel seal left car running and it done as said on the bottle
Hightly recommend

by John Quackenbush on Steel Seal
Make, Model, Year: Chevy Astro 1998

After sitting for the entire Winter, a large amount of coolant seeped into the oil, the gasket was leaking, but the engine ran fine in that the coolant was not getting into the cylinders. I changed the oil, added the required about of Steel Seal to the radiator, filled with coolant and water and ran the engine with the heater and fan on high for 30 minutes as stated in the instructions. Now there is no coolant leak and there are no signs of coolant in the oil. This stuff is that amazing!!!!!! I used it on a 203 astro van as well with just a coolant leak and it worked on this as well.

by Anthony J. Segreti on Steel Seal
Overheating @ 127,000 Miles
Make, Model, Year: 2000 Dodge Grand Caravan

My wife's 2000 Dodge Grand Caravan Sport started having overheating problems at a little over 127,000 Miles on the odometer. The symptoms were of a malfunctioning thermostat! When started cold the needle on the dashboard temperature gauge would gradually go all the way from zero to "HOT" which was as far as the needle could go and after about 30 seconds (+/-) go back to the middle of the gauge and remain there until the van was shut down. The next day the problem would be repeated and so on! I took the vehicle to a local repair shop which diagnosed the problem as a blown head gasket on the bank of cylinders next to the firewall and suggested that I take the van to a dealer or engine shop to get it repaired. Not wanting to spend much more than the vehicle was worth i consulted with one of my sons who is into antique cars big time who checked with a mechanic friend of his who said that he had a friend who had an old Ford pick-up truck that had a lot of miles on it and when it developed a head gasket problem he treated it with "Steel Seal" which solved the head gasket problem and since then he has driven the pickup truck another 200,000 miles, which included a number of trips to Florida and back, which convinced me that I should give Steel Seal a try! I ordered 2 bottles of Steel Seal and with the help of my son, we followed the directions to a tee! Well the vehicle has been driven 341 miles since we used the product and the vehicle is running incredibly well! All I can say is that's the best $120 (+/-) that I have ever spent!

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