
Instructions
- Shake vigorously for 30 seconds K-Seal ULTIMATE will naturally separate if left to sit for an extended period. ...
- Pour into radiator or header/expansion tank Pour the entire bottle of K-Seal ULTIMATE into your cooling system. K-Seal ULTIMATE can be used in hot or cold engines. ...
- Run your engine as normal
Will K seal fix a blown head gasket?
Yes. K-Seal will permanently repair and fix most head gasket failures including: The best and most effective head gasket sealer is manufactured by K-Seal – and we say that with confidence.
Is K seal any good?
K-Seal will not block the cooling system and is safe to use with all types of water cooled engine. Will K-Seal block anything in my cooling system? K-Seal will not block the cooling system and is safe to use with all types of water cooled engine. Click to expand...
What is the best head gasket repair?
K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair
- Permanent coolant leak repair – Just shake, pour and go
- Mixes with all antifreeze
- No draining or flushing
- Fixes cracks and leaks in radiator, head gasket, freeze plugs, cylinder heads, heater core, water pump casing and engine blocks.
How to replace a head gasket the Cheap Bastard way?
- Combustion gases (unburned air/fuel mixture and exhaust gases) in each cylinder
- Water-based coolant in the coolant passages
- Lubricating oil in the oil galleries

Does K-Seal fix head gaskets?
Can K-Seal fix my head gasket? Using K-Seal, K-Seal HD or K-Seal Ultimate will permanently repair and fix most head gasket failures including: Coolant to cylinder leaks.
How do you use the K-Seal Ultimate head gasket sealer?
InstructionsShake vigorously for 30 seconds. K-Seal ULTIMATE will naturally separate if left to sit for an extended period. ... Pour into radiator or header/expansion tank. Pour the entire bottle of K-Seal ULTIMATE into your cooling system. ... Run your engine as normal.
How long does it take K-Seal to work?
It'll take 5 minutes for your engine to reach operating temperature.
Do I put coolant after K-Seal?
When adding via the overflow/expansion tank, add K-Seal first and then top up the coolant. This helps to get K-Seal into the cooling system more quickly.
Do you use the whole bottle of K-Seal?
0:402:17How to use K-Seal to stop coolant leaks and fix head gaskets - YouTubeYouTubeStart of suggested clipEnd of suggested clipKCl is incredibly simple and quick to use you just shake or and go shake the bottle vigorously forMoreKCl is incredibly simple and quick to use you just shake or and go shake the bottle vigorously for at least 30 seconds add the entire contents to the expansion tank or radiator.
How many bottles of K-Seal can you use?
How much K‑Seal do I need? 1 standard bottle of K‑Seal (236ml/8floz) will treat cooling systems with a capacity up to 20 liters (this covers motorcycles up to light commercial vehicles). For larger cooling systems use our Heavy Duty (472ml/16floz) size K‑Seal.
Is K-Seal a permanent fix?
K-Seal, K-Seal HD and K-Seal Ultimate are a one-step permanent multi-purpose system for coolant leak repair with over 6 million bottles being sold worldwide to date. It permanently repairs leaks in the head gasket, block, radiator, heater core, freeze plug and water pump casing.
How do you know if K-Seal is working?
3:5514:15K-Seal Coolant Leak Repair Test & Review - Does It Work ... - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo just filled the cool system up with water and you can see where the actual leaks coming out atMoreSo just filled the cool system up with water and you can see where the actual leaks coming out at the bottom there. It's a good steady constant drip.
How do you flush K-Seal?
The basic steps to flush a car engine block are:Remove the lower radiator hose and catch the draining coolant in a bucket.Remove the top radiator hose and flush the system out with a normal hose.Continue until the water runs clear out of the bottom of the engine.Refill with coolant and reattach the radiator hoses.
Do coolant sealers work?
The answer to this question is yes, radiator sealants really do work. However, they are not a miracle solution, and are only good for a temporary fix. Even so-called “permanent” sealants will only last for months, not years. A good radiator sealant–also called a stop-leak–can seal all kinds of cooling system leaks.
What is the best coolant stop leak?
Best Radiator Stop Leaks Reviews & Recommendations 2021Best Overall. K-Seal Coolant Leak Repair. ... Best Value. Bar's Leaks Liquid Aluminum Stop Leak. ... Honorable Mention. Blue Magic Radiator and Block Sealer. ... Honorable Mention. Bar's Leaks Radiator Stop Leak Concentrate. ... Honorable Mention. ... Honorable Mention.
How does a head gasket sealer like K-Seal work?
The secret to K-Seal’s success lies in the unique combination of copper particles and scientifically engineered ceramic microfibres that comprise the solution.
Why is K-Seal the best head gasket sealer?
When a head gasket blows or develops a leak, the entire engine is put at risk. This can be an extremely expensive problem to rectify, so it is vital that it is sorted out as soon as an issue is identified.
How do I use a head gasket sealer like K-Seal?
It couldn’t be simpler to use K-Seal products to repair a blown or leaking head gasket on your car. Simply visit our instructions page for more information.
How to use K seal Ultimate?
Instructions. 1. Shake vigorously for 30 seconds. K-Seal ULTIMATE will naturally separate if left to sit for an extended period. It’s important to shake the bottle for 30 seconds before application, to ensure an effective treatment. 2. Pour into radiator or header/expansion tank. Pour the entire bottle of K-Seal ULTIMATE into your cooling system.
Can you flush a K seal?
K-Seal’s unique formula will permanently fix any leaks in the system, and it is not necessary to remove to formula after use. However, you can flush the system if you wish and any leaks will remain plugged. Important Please use caution when working on a hot cooling system as hot coolant and gases could cause injury.
Can you use K seal Ultimate in hot or cold?
Pour into radiator or header/expansion tank. Pour the entire bottle of K-Seal ULTIMATE into your cooling system. K-Seal ULTIMATE can be used in hot or cold engines. If you are applying to a hot engine be careful as the cooling system will be under pressure.
What is K seal?
K-Seal is a specially-developed, scientifically tested formula containing ceramic microfibers and copper particles. When added to an engine’s cooling system K-Seal will flow harmlessly through, suspended in the coolant. However, if a leak is present, K-Seal will quickly coagulate around the damaged area and repair the crack permanently.
Does K seal fix a leak?
However, if a leak is present , K-Seal will quickly coagulate around the damaged area and repair the crack permanently. With over 6 million bottles sold worldwide, K-Seal is the only coolant leak and head gasket repair liquid to be scientifically tested and compliant with the ASTM D3147 standard.
How to use K seal?
1. Shake the bottle vigorously and add the entire contents to the radiator or header/expansion tank. If adding to the radiator do not pour directly onto the radiator core. K-Seal products are compatible with all types of antifreeze/coolant and are not affected by other additives that may already be in the cooling system.
How to fix a squeaky engine?
2. Run the engine up to operating temperature. The quickest way is to take the vehicle for a gentle drive – otherwise, leave the. engine idling until the temperature gauge reaches the normal level. 3. Either replace the cooling system contents or leave K-Seal in the system.
Can you leave K seal in the system?
After K-Seal has made a repair it is not necessary to leave it in the system because the repair is permanent. You can either choose to replace the contents of the cooling system or leave the original K-Seal product in the system. Additional installation tips and information.
Can you use K seal on a hot engine?
It does not matter if you add K-Seal products to a cold or hot engine, but take care when working with a hot engine. For very small cooling systems (e.g. motorbikes), it is possible to add just part of the bottle but you must make sure that the contents are extremely well mixed first. 2.
Can you use K seal Ultimate in radiator?
Pour into the radiator. Pour K-Seal ULTIMATE into your radiator (but not directly onto the radiator core) or header / expansion tank. K-Seal ULTIMATE will not be affected by any coolant, antifreeze or other additives already in the cooling system. It can be used in hot or cold engines.
Can you use K seal on a hot engine?
3. Start your engine and get back on the road! Once you have applied K-Seal ULTIMATE to your coolant system, simply run your engine as normal. Important Please use extreme caution when working on a hot cooling system as hot coolant and gases could cause injury.
How to seal a leak in a K-Seal HD?
To effectively locate and seal any leaks in the engine’s cooling system K-Seal HD must flow freely around the system. Bring the vehicle’s engine to its normal operating temperature by idling or gentle driving to let the coolant flow normally.
How to use K-Seal HD?
Instructions. 1. Shake bottle for 30 seconds. K-Seal HD will naturally separate if left to sit for an extended period. It’s important to shake the bottle vigorously for 30 seconds before application, to ensure an effective treatment. 2. Pour into radiator or header/expansion tank. Simply pour K-Seal HD into the vehicle’s cooling system.
Can you flush a K seal after use?
K-Seal HD’s unique formula will permanently fix any leaks in the system, and it is not necessary to remove to formula after use. However, you can flush the system if you wish and any leaks will remain plugged. Important Please use caution when working on a hot cooling system as hot coolant and gases could cause injury.
Can you use K seal on a hot engine?
Simply pour K-Seal HD into the vehicle’s cooling system. K-Seal HD can be used in hot or cold engines, and is specifically designed for the more powerful engines found in HGVs, tractors, trucks, and other commercial vehicles. The entire bottle should be used. If you are applying to a hot engine be careful as the cooling system will be ...
