Blue Magic 1116 Liquid Glass Metallic Seal-Up - 22.8 oz.

Followed instructions and it worked on cracked cylinder head. I was sceptical but I worked as described.

So far so good

This is a quality product for small leaks, unfortunately, my head gasket leak was too large for it to work.

I have mixed feelings about this product. My tractor engine was overheating due to water loss and making a lot of noise. After using this sealant, the noise significantly reduced, which was a great improvement. However, the engine still overheats and continues to lose water. I'm not sure if it's due to the product or if my engine’s condition was just too far gone. For the price, it's definitely worth trying if you're facing similar issues, but keep in mind that it might not solve all problems.

I had a horrible block leak (Losing a gallon an hour roughly and steaming like crazy out the exhaust) and had quoted 4k dollar engine swaps. I tried this and a "less be-all-end-all" product to fix my truck. The K-Seal product didn't really seem to seal it up. I dumped a bottle of this in and it has seemed to do the trick. Around the 18 minute mark of the 20 minute bake time that it calls for i think it locked up my thermostat and the engine began getting dangerously hot like the thermostat wasn't opening up, so you may want to keep an eye and keep a replacement thermostat on hand if you're using this product. Following the instructions and replacing the thermostat after observing that behaviour this 4.7L Tundra Motor with 300K+ miles is back in action.

Everybody says follow the directions exactly. They start out with using the correct size of seal up product. Part number so sbd so for up to 6 gallon capacity and another part number for over 6 gallons but the part number for the bottle in my hand is nowhere on it. So how did you all figure you followed the directions without asking amazon what the part number was for the bottle they shipped. I'm guessing it's the smaller but why would I want to have to guess at this. ? The directions are crap along with the no help to find the product number . I hope it works using the bottle I got . It's a smaller car so I'm hoping avd wishing . Have had success in the past using different product so I think it's possible to work. I sure hope so. We have a blown head gasket and the car is hard to start and dies while sitting still at intersections . Then if it does start, it dies soon as you put it in gear Then line of traffic builds of honking cars. I can't stand to drive it anymore or afford to have it fixed for nearly a thousand dollars. All becatse an electric fan failed after 14 years. . It overheated very badly and caused this condition. So I'll write a better review if it works and be overall happy . But right now I'm undecided until it works

If you follow the directions to the letter it works!! Sealed my head gasket leak on a 99 Accord. My rough idle went away and misfires. The subframe rusted through before the head gasket sealer stopped working. I would buy this again and again. Excellent bandaid.

No luck wasn’t able to seal small leak. Was able to get it done with a large dose of sodium silicate concrete sealer after flushing again. Probably 2.5 of these bottles is the dose I used of concrete sealer. Maybe a 2nd or 3rd bottle would have been enough. Not a fan of flakes in every sealer product either.

I used it +20 years ago & I’m using it again that means it’s working.