Are you looking for the best head gasket sealer? You have definitely come to the right place. The best head gasket sealer will permanently seal your blown gasket and save you potentially thousands of dollars on a complete engine replacement. The head gasket seals the various fluids in the engine away from each other and prevents them from ever mixing.
A mix of coolant, lubricant fluid, and air/fuel mixture would cause serious problems for the engine. The problem is the head gasket is buried between the engine head and cylinder block and practically cannot be seen unless you take the engine apart. If you see coolant leaking from the exhaust manifold, white smoke in the exhaust pipe, or bubbles in the radiator, you could have a blown head gasket.
While obviously the best solution to fix this problem would be to replace your entire head gasket, this is often a very costly fix which could end up costing several thousand dollars. A much cheaper but temporary solution is the use the best head gasket sealer.
Simply pour the best head gasket repair product in your radiator and your blown head gasket should be sealed. Of course, there is no guarantee this will work permanently, will some reporting it does not work and some reporting it working only for a few months. But at such a cheap price, it is worth a shot to try it out before going through a full blown head gasket replacement.
Best Head Gasket Sealer Reviews
- BlueDevil Pour-N-Go Head Gasket Sealer (Top Pick)
- Bar’s Leaks Head Gasket and Cooling Sealant
- CRC Permanent Head Gasket & Block Repair
- Permatex 80062 High Tack Gasket Sealant
- Prestone AS663 Head Gasket Stop Leak with Kevlar
BlueDevil Pour-N-Go Head Gasket Sealer
BlueDevil holds the reputation for being the best liquid head gasket sealer on the market for 4 or 6 cylinder engines. It is one of the most popular brands on the market. The Pour and Go is really designed for the people who are not auto savy and want a very easy do it yourself solution.
It is incredibly easy to use: simply make sure the engine is cold and pour a 16 oz bottle into the radiator with the engine idling. If the radiator is full, drain some antifreeze until you have enough room for the BlueDevil. Leave the engine running on idle for about 1 hour.
The BlueDevil is certainly not a permanent fix. It is a temporary solution that works for a year or more that saves doing expensive repairs on your head gasket. The success rate on the BlueDevil Pour and Go is higher than any other product we have seen. And the best part about it is you don’t have to do dirty work like remove the thermostat and flush the system.
Blue Devil uses a mixture of ingredients that includes sodium silicate, a high temperature adhesive, to fill the gaps within the head gasket. If you are looking for the best head gasket sealer for 4 or 6 cylinder engines that is incredibly easy to apply and has a high success rate, Blue Devil is hands down the winner.
Most users and mechanics swear by this product and is their go to product. We polled a lot of users and the reviews basically came out two sided. Either people loved it or completely hated it. Those who hated it usually either didn’t really apply it correctly or had some serious head gasket leak issues. Of course, a solution in a can won’t replace a head gasket repair by a professional. Do not fool yourself into thinking this is a permanent solution.
The majority of the users we polled loved the product and claimed to extend the life of their head gasket by at least one year. Whether or not you believe these reviews, we think it is worth a try. At least have a bottle of it around in your car in case you have major unexpected problems on the road. Overall, we like the Blue Devil and do not hesitate to recommend it to you. If you want to get one head gasket sealer that is very effective and priced accordingly, this is the one to buy.
Bar’s Leaks Head Gasket and Cooling Sealant
Bar’s Leaks head Gasket Sealant is the best head gasket sealer if you want more compatibility with various engines and if you want to try an alternative solution to BlueDevil. Bar’s Leaks works on gas, diesel, turbocharged, and racing engines that are 4,5,6,8, or 10 cylinders, which makes it more compatible than the Blue Devil, which works only on 4 or 6 cylinder engines.
This is a professional grade sealant that forms a seal around your head gasket and stops all coolant leaks in your engine. The formula contains sodium silicate that is compatible with antifreeze and gasket sealing particles reinforced with carbon fiber that harden in between gaps.
There is also the Xtreme Cool patented ingredient that reduces water temperature and stops overheating of the engine. The instructions are fairly simple. Make sure the engine is cool and fill your radiator up with Bar’s Leaks Head Gasket sealer and put your car on idle for 15 minutes while keeping your heater on hot and your fan on high. Then you let your engine cool for 30 minutes.
After you run your engine on high idle for 15 minutes (1200 rpm) and then let it cool for another 30 minutes. All in all, the Bar’s Leaks Head Gasket Sealer is the best head gasket sealer if you are looking a versatile and easy solution.
CRC Permanent Head Gasket & Block Repair with Nanotechnology
The CRC K&W Permanent Head Gasket Repair is the best liquid head gasket sealer on the market if you have the time and knowledge to work a little for it. But once you install this, we find that it works better and longer than the simple pour and go solutions.
The CRC is not like the BlueDevil or Bar’s in that you simply pour it in and everything is fixed. It requires more attention and flushing out your system. It requires a radiator flush, radiator anti-rust, antifreeze, a pan and some hand tools. First you will need to drain the antifreeze and flush the cooling system.
You must flush the system completely until there is no antifreeze present. If you don’t know what these things mean, you should probably stick with an easier solution. This is almost half a day’s worth of work. However, it is a better solution than paying for an expensive head gasket replacement.
We prefer flushing the radiator and applying the CRC Permanent Head Gasket Repair. It is a much better way of temporarily fixing your head gasket leak than these easy pour solutions. Unfortunately, we do not know what is in this nanotechnology that supposedly fills in the microgaps. But we know it works well and has a fancy name. So if you want the best head gasket sealer that offers a longer duration fix but with more upfront work, this is the solution for you.
Permatex 80062 High Tack Gasket Sealant
For those who want to easily repair cracks in their head gasket, the Permatex High Tack Gasket Sealant is certainly a viable option. With the Permatex High Tack Gasket Sealant you get a fast and permanent repair. This sealer also works on engine blocks, intake gaskets, cylinder heads, heater core, coolant leaks, and more. Compared to its competitors, we think the Permatex High Tack is priced right and performs near to top end of the range.
This head gasket sealer has a high strength to weight ratio, making should that it forms a permanent, multi-layer, and strong foundation over the breach. There are also nano particles just like the CRC K&W Fiberlock. These particles create a stronger and more solid bond to the metal. The Permatex High Tack also circulates in the cooling system. This helps improve heat transfer after you have made repairs to the head gasket.
Additionally, we like the fact that the Permatex is a fast drying highly tacky non-brittle film. It remains tacky indefinitely and remains effective in a wide range of temperatures from -65 to 500 F. It is also sensor safe and resistant to kerosene, propane, gasoline, and butane.
We asked a few auto repairmen their views of the Permatex High Tack. Some of them have not heard of the product. The ones who have heard of it and used it love it. They say it is quite cheap and it works very well. It doesn’t have any fancy advertising or logo, but it sure does work. Of course, there is also a drawback. The most common complaint is that it does give off a rather strong odor. You may want to use a mask when applying this head gasket sealer. A 4 oz can goes a long way but be sure to avoid getting sealant on the threads of the can or it will be hard to open.
Prestone AS663 Head Gasket Stop Leak with Kevlar, 16.5 fl. Oz.
The Prestone Head Gasket Stop Leak is the best head gasket sealer if you want a cheap and convenient way to prevent leaks on the road. All you need to do is add this to antifreeze or coolant. Afterwards, the Prestone will begin to find the leaks in your system. It is an easy do it yourself product. Basically, this helps you avoid costly repairs and taking your car to the mechanic. We think the best feature of the Prestone AS663 Head Gasket Stop Leak is that it is portable. You can just stick this in the glove compartment of your car. If there is a problem on the road, use as needed.
The selling point of this product is that it has a triple seal protection made with DuPont Kevlar. What does all of this even mean? The label certainly makes it sound very easy. One, Prestone Head Gasket Stop Leak has fast acting beads that quickly find your leaks. Two, this sealant has Kevlar resin that binds to metal. And three, the acrylic hardener makes the seal permanent. So there you have it. It is easy to use as 1-2-3 according to the label.
We really like the fact that this product comes in tablet form. Liquids are usually messy to deal with and you end up spilling solution everywhere. Also, liquid sealants tend to give off lots of odor. The Prestone Head Gasket Sealer is definitely not the first option if you have a serious head gasket leak. If you don’t have to time or money for a proper mechanic, this is certainly a cheap alternative.
We asked many user and experts in the industry their views on this product. Most mechanics were quite skeptical that these repairs in a bottle would work. However, after using this product, most people came out with quite positive reviews. It tends to work as a temporary solution and not a permanent fix. But this is also what we kind of expected. There is no cheap repair in a bottle that can permanently fix a head gasket issue. However, if you follow the directions on the label correctly, you can certainly kick the can down the road for expensive repairs.