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:  
 148 reviews
by John Quackenbush on Steel Seal
Amazing!!!!
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.
Jim

by dylan on Steel Seal
AMAZING
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!

by Damon Valverde on Steel Seal
Great Product
Make, Model, Year: 2000 Mazda MPV

Im the last guy who I would ever hear say put something in your engine. Shade Tree mechanic for 40 years. Its 2018 and new products have been developed. Van was not worth the time for a head gasket replacement. Just spent a couple Hundred for a new water pump. I saw this stuff on Scotty Kilmer. Drained coolant and filled with plain water. Put stuff in. Thats it. Drove for 5 miles steaming. It started to go down a bit. Idled it for awhile. Turned it off and came back in a half hour and repeated. Less Steam. Kept doing this till steam stopped whole refilling with Coolant mix 50/50 as needed. Engine runs fine now. Just got stuck in 2 hour traffic and it was no problem. It fills the crack and hardens with heat. The rest of the engine is fine. I recommend this product 100%! Thanks for saving me thousands of dollars.

by Galen M on Steel Seal
Galen from Sarasota FLORIDA
Make, Model, Year: 2000 Ford Explorer 4.0

GENIOUS PRODUCT!!
I have a 2000 Ford Explorer 4.0 SOHC
A hose blew out, of the driver did not notice anything and the engine overheated to the shut itself off point. Most people know that at this point it’s a definite blown head gasket problem now or worse. Fortunately, after it cooled down I did not hear any tell tale sign of internal engine failure but because it was blowing pressure through the reservoir, wet steam from the exhaust and horrible engine miss, I was looking at the inevitable...”Head gaskets” or cracked heads, block ect.
This is a “point a to b” vehicle and not worth repairing.
I found this his product on-line and with its guarantee offer I decided what the heck? What’s to loose?
I followed the simpl instructions sent with the product and nearly 6 months later it’s still running great. It took a day or two of the process but eventually sealed and worked like I’d never imagine.
I’ve been in automotive all my life and in 50 some odd years I’ve never seen anything like this.
This product is awesome and WELL WORTH the chance and money it takes to fix your head gasket issues.
I’m a firm believer now!!!
Thanks Steel Seal! You saved my wallet

by George Hill on Steel Seal
Steel Seal works where others don't
Make, Model, Year: 2008 Chevy HHR

I'm amazed. This was my last resort before going for the head gasket replacement.
I had tried Several types of Bars Leak, K-Seal, K & W permanent sealer and Blue Devil. Call me hard headed but what troubled me is the car seemed to drive well for a while before it would heat up so I didn't think the breach could be that bad. So I kept trying.
I came across a video on Steel Seal that showed them adding it to I believe a Cadillac that was blowing white smoke and as they watch the smoke disappeared as they timed it.
So I thought Steel Seal worked for that it may work on mine. I spoke with both Roberts listed on the instructions to make sure I didn't miss anything and then added Steel Seal as instructed.
To my amazement - IT WORKED!
The car runs absolutely perfectly now. I waited a week before writing this to make sure it wasn't something temporary.
I can't thank the Roberts and Steel Seal enough for what I saved. Yes, it's a bit more expensive that the other guys but this stuff works. Save the effort of going through all the disappointments I went through and start with Steel Seal and you'll be back on the road again in no time. Thanks again, guys.

by Jay Donkel on Steel Seal
Good stuff!
Make, Model, Year: 1988 GMC C1500

I have over 235,000 miles on my truck. It was running rough with white smoke. After a treatment of Steel Seal it's running well with no smoke. Gooood stuff!!!

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