Updated at: 30-03-2022 - By: Lucas

The replacement of a car’s head gasket, one of the most expensive auto repairs, may run into the thousands of dollars.

However, the good news is that you may fix it for the time being while you save up for repairs or a new vehicle.

A blown head gasket can be repaired without having to replace the entire engine.

Use of a head gasket sealant is a good alternative to replacing your worn out head gasket.

After a head gasket leak, you have no choice but to replace it or use a sealant.

The sealant is economical and can last for several months or perhaps a lifetime, depending on the severity of the leak.

All sealants work with certain coolants, however not all sealants work with all coolants.

It also varies according on the substance and the fuel used. There are fixes that can last longer than the life of a head gasket.

Head Gasket Repair With A Sealant

How To Fix A Blown Head Gasket Without Replacing It-1

The only way to fix a blown gasket seems to be to replace it, but not everyone wants to spend money on a gasket when their car is getting old and on the verge of breaking down.

Using a gasket sealer instead of replacing the gasket can save you thousands of dollars, as replacing the gasket can cost as much as $1,200 or more.

When it comes to gasket sealers, they’re outstanding because they’re able to maintain their seal for an eternity. It’s not a short-term cure, but rather a long-term solution that can endure until you decide to buy a new automobile.

Gasket sealing particles are suspended in a sodium silicate sealing liquid that has been reinforced with carbon fiber in cutting edge formulae.

These sealers take into account a variety of variables, such as vehicle type, coolant type, anti-freeze, as well as more.

As a result, they are safe to use on a wide range of cars, whether they are powered by gasoline or diesel. You get a new lease on life from these services, which are also fast and convenient.

How Does Gasket Sealer Work?

The cooling system can be sealed using a liquid sealant, which is the most common way.

In order to get the sealant to circulate in your engine, you need drive for around 30 minutes after applying it.

The seal can either be permanent or temporary, depending on the product, so that you can keep it in place until you can cure the leak.

Internally, the cooling system’s sealant works to stop leaks and builds up at the point of leakage. The heat activates the compounds present.

When exposed to the noxious fumes, they solidify. After the seal has been strengthened, the engine’s heat cures and hardens it.

How Do I Use A Gasket Sealers?

Regardless of how well the sealant was placed, it will eventually wear off. This occurs when the product is unable to maintain the fix.

As a result, it’s imperative that you choose your gasket sealer carefully and adhere to the manufacturer’s directions to the letter.

Note if your antifreeze and coolant are compatible with the sealers you choose.

The product’s suitability for various engine blocks and cylinder heads (aluminum, cast iron or brass) should also be taken into consideration.

Only a few call for you to remove the thermostat or drain the cooling system of all of its coolants.

Follow these steps for successful sealing after selecting an appropriate gasket sealer:

To ensure that the product is fully combined without any sediments, shake the bottle.

If you don’t have a flushing agent on hand, use distilled water to clean out the radiator. When the liquid is clear, keep going until it is. This is an optional, but highly recommended, step. However, if your radiator is clogged, you must flush it before applying the sealant.

Leave a small amount of space for the sealant to get in there. Make sure you know how much product you’ll need before you begin, as it varies according on the number of cylinders you have.

Start the car after putting in the correct amount of sealant. Set the heat to maximum, turn it on, and let it run for 15 to 30 minutes. Turn up the volume on the fan. 9 The product’s instructions should be followed.

It’s best to drive at freeway speeds for around 5 kilometers before shutting down the engine.

Drain the water and refill it with coolant if you used it for sealing.

How Do I Choose An Appropriate Sealant?

How To Fix A Blown Head Gasket Without Replacing It-2

One of the most cost-effective and time-sensitive things you can buy online is a head gasket sealer, as this has been demonstrated. By doing this, you avoid having to pay for costly auto repairs.

Even if you eventually decide to buy a new car, the repair might last for a long time if you use the right sealant. What’s more, it all depends on the extent of the leak.

Minor cracks can be held in place with sealants, preventing larger ones from forming.

This necessitates the usage of a professional-grade product. You can’t just go out and buy the first one you see.

To find a sealant that will last, here are a few questions you must ask yourself:

How Easy Is It To Use?

There are numerous formulations of head gasket sealer available on the market. While liquids are the most common, aerosol sprays are also available.

The majority of items are simple to use, but there are a few that require you to take measures in advance. Is your sealant good at stopping leaks if all you have to do is pour it on and walk away?

Few goods necessitate that you prepare your engine and cooling system prior to use. If this is the case, how difficult is it? Is it possible to accomplish things on your own, or do you need the assistance of a professional?

You’re instructed to perform a coolant and antifreeze system flush. After the sealing procedure is complete, you can add them in if you want to do so.

Is It Compatible With Your Engine?

Choosing a sealant that is compatible with your vehicle is the first step. Products for gas engines and diesel engines are available, as are products for other types of engines.

For some, you may need to drain and flush your cooling system first if you’re using a water-based setup.

A product that isn’t compatible can actually worsen the situation instead of improving it.

Do your research before purchasing a sealer; you may need to buy more than one depending on the make and type of your vehicle. How much there is is determined by how many cylinders there are.

Is it Multipurpose?

Is your car’s head gasket the only source of leaks, or are there others? Head gaskets can be replaced with a component specifically intended for this purpose.

However, multi-purpose items may be a better option if you have other leaks or engine problems.

Other problems with the engine block, cylinder head, radiator, and cooling system can be addressed with these multi-purpose products.

You can save money and time by using one product to accomplish numerous tasks instead of spending money on each one.

How Fast Does It Work?

Getting the task done quickly and getting back on the road is important if you’re in a hurry.

Although items that work rapidly are available, how excellent is the quality of those products? It’s pointless to patch the leak only to have it reappear shortly afterward.

The sealing procedure usually takes between an hour and two hours for most sealants.

Isn’t it better to wait for a long-term solution than a temporary one? Choose a product based on the amount of time you have available.

Permanent Fix Or Temporary Fix?

When selecting a gasket sealer, it is also important to consider how long the repair will last.

You’ll need a long-term solution, as previously mentioned. A product that only functions for short periods of time would be of no use to you in the long run.

Because the head gasket is out of sight, it’s impossible to see if there’s a problem.

By the time problems arise, the engine has already developed a leak and is being pummeled.

You may want to pick one carefully if you intend to use it as a stopgap measure while you wait for your head gasket to be replaced.

How Can I Prevent A Blown Head Gasket?

Head gasket repair is an expensive, time-consuming, and labor-intensive job that can cost as much as $1000 to $1500.

The part itself isn’t pricey, but the effort involved in disassembling and reassembling the engine is.

Depending on how busy the mechanic’s shop is, it could take anything from a few days to several weeks.

In light of the aforementioned, it is imperative that you avoid such problems in order to avoid the associated costs.

Regardless of how long-lasting a gasket sealer is, it will eventually wear out and you’ll either have to buy a new one or give up on the car.

To avoid a blown head gasket, stop a leak, and so on, consider the following suggestions.

If your automobile overheats frequently, take it to a technician or an auto repair shop for an inspection. Your car’s temperature gauge will turn red if the engine is overheating. If this continues, the head gasket will burst under the pressure.

If you’re unsure about what type of oil or coolant to use, consult your owner’s manual. Observe the instructions and utilize the correct vehicle for the task at hand. The appropriate kind will keep the car’s internal components in good functioning order and extend its lifespan. Ensure that there are no leaks.

Misfiring engines are also a concern. If your car’s engine begins to misfire, have it checked out by a mechanic. Because it wears down the part so quickly, it is a common cause of a blown head gasket.

Changing the oil is necessary for a reason. Don’t miss it for anything. Dirty engine oil can cause the head gasket to burst, thus many people prefer to put it off as long as possible. Make sure to follow the instructions in the owner’s manual when it comes to changing the oil.

Is A Blown Head Gasket The End Of My Car?

If you catch the problem early, a blown head gasket won’t be the end of your vehicle.

The damage to other components, such as non-lubrication, overheating, and coolant leakage, is more concerning than the gasket itself.

Using a sealant to stop the leak until the part can be replaced should suffice till the problem is fixed.

Can I Use The Head Gasket Sealer More Than Once?

If your head gasket leaks again, you can use a head gasket sealer a second time.

To avoid clogs in the radiator and thermostat, flush any remaining sealant from the system.

You may want to consider replacing it if the leak is so terrible that you have to keep sealing it.

What Are The Symptoms Of A Blown Head Gasket?

If you know what to look for, you’ll be able to tell if your car has a leaking head gasket in no time. A blown head gasket might cause the following symptoms.

Engine overheating

System coolant levels have dropped.

Engine oil that has turned milky in color.

The exhaust pipe is emitted white smoke.


Head gasket failure can be a tough problem to fix.

It’s a time-consuming task that can result in tens of thousands of dollars in repair costs, making it the fourth most expensive one. A gasket sealer is the best option if replacement is not an option.

Sealant for head gasket leaks is a liquid that is injected into the radiator and moves through the cooling system.

As they react to the gases and cure with engine heat, they form a tight seal that is much more durable.

Prior to making a purchase of any kind, you must take into account a number of things. A product’s simplicity of use, compatibility, functionality, durability, and so on all play a role in making a purchase decision.

The head gasket may need to be replaced if the problem persists.