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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 152 reviews
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!

by Donnie on Steel Seal
So far so good
Make, Model, Year: 4Runner, Toyota, 1995

I have a 4Runner with the 3.0, so you know this stuff has to work at the very least a little bit. At first I didn't think it was working and contemplating whether to get a refund, or get another dose and try again. But lo and behold, it worked. the positive reviews that I found made it sound like it worked a little faster than it did, but nonetheless, it worked. Did just what it said it would do, so I can't find any other reason not to give it 5 stars.

by Jim Phillips on Steel Seal
Yes it works and I also did a test!
Make, Model, Year: 1998 Chevy Blazer

Ok so my son's SUV had a blown head gasket and we had just rebuilt the tranny etc. so when the head gasket blew I was at my wits end.
I spoke with the guys at Steel Seal and they went over the process in detail and I was a skeptic, like with blown radiators it seemed like it could have some downsides if it worked at all. So I made a small test loop of copper pipe and hooked it into the heater core loop to see if the stuff goops up the system or has a downside. We did the process and it worked! I removed the copper pipe and it was clean. My guess is it only reacts within the high temperature of the head gasket. So it worked, a friend of mine showed up on a job we were working and his truck had a blown head gasket, he is a wrench spinner like me and I told him to give it a try, that was 4 years ago and going strong.
It works, and it is not a short term fix.

by dylan on Steel Seal
Make, Model, Year: astra 1.9 cdti 2008

Bought steel seal as my Astra 1.9 CDTI was running rough,white smoke and coolant was bubbling its amazing even for a novice mechanic like me it was so easy step by step instructions even her indoors could have done it,thanks for a great product saved me £££££s cant recommend it enough don't let the price put you off as the saying goes you get what you pay im ordering another bottle just in case anyone i know has a problem and i will offer them the same promise of a money back guarantee.Regards,Dylan

by andy on Steel Seal
good product
Make, Model, Year: vw golf gti mk4

car was overheating, used steel seal as per instructions. wasn't expecting it to work but after pouring it in, wow it actually works, car stopped over heating and still continued to drive with the same power as previous, highly recommend for a quick easy and so far reliable fix to a big expensive repair. great stuff will use again over a big repair cost!

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