This stuff really WORKS! I used it in my 1994 Toyota Celica with over 342,000 mile on it and it worked like a Champ! I highly recommend this product! Cheers Mate!
Had a radiator leak in my 40 ft. Motor home in "Thumbinbut" Carolina. Went to the local Walmart and bought K-seal. Stopped the leak almost immediately. Been 2 years so far and still leak free. Got my vote 😀😀😀😀😀😀😀😀😀
This stuff works! After $5k spent on coolant pressurization issues I still had an unsolved mystery coolant leak with my big rig. I got a bottle of K Seal HD and it saved me time and most importantly money!!
I used the small bottle with water and it did the job ... then I drained the water changed the oil ... added coolant ... run it for ten minutes ... then added the big bottle undead the plug wire to the leaky cylinder ... ran it for 20 minutes ... topped of coolant and overflow ... ran it a few more times with all cylinders fiing at idle and it's seems to really be working great ... 😊
I used this stuff on my 94 wrangler yj 4.0. It had a leaking head out on the side of the block that I didn’t worry about for a couple years but then my radiator started to leak. I picked up a bottle of this stuff at my local o Reilly’s and within a couple minutes the leak was completely gone in the radiator and head. I couldn’t believe it! I tell everyone now that I have replaced the head gasket 😂
Great product and it really does work. Used it in my Kenworth a few years ago when I had a leaky radiator. I drove 2,700 mi back home and probably could have drove even more. I then replace the radiator but I always keep a bottle or two in my truck.
After checking the reviews and of course trying other brands for my 05 Subaru legacy 2.5 famous leaking head gasket issue I bought it and poured it today. From looks of it after 5+ minutes it seems it stopped but to be sure I will update my review after a while. I don't have to mention that Subarus are hard to fix with these products and engine can be damaged easily. So time will tell but I am optimistic. Wait and see.....
My Nissan Navara which has 235000 miles on the clock developed a leak somewhere by the cylinder head where it mates with the engine block. One bottle of K seal later and the leak stopped within 5 mins. Brilliant product well worth the money and still no leaks after 6 months.
My 95 Lincoln Town car was going through quite a bit of coolant, meaning the overflow tank was usually empty every time I drove. I don't have time to a proper repair right now, so thought I'd try this stuff until I do. After a couple months the coolant level is staying right where it is supposed to, knock on wood! I only had to add coolant after K Seal to get the system topped back up while it started circulating, but is now staying where it is supposed to. It's already saved me money since I was buying a lot of antifreeze. I'm going to get some K Seal for my 2001 Ford Ranger truck as it is leaking a little around the water pump gasket, nowhere near as bad as my Town Car leak (think it was the intake manifold on my Lincoln), but I do have to top it up every couple months. Hoping this stuff helps with that one too. At the price, even if it saves me from buying two jugs of antifreeze, it paid for itself, so not really out anything.
Another month+ and coolant level is still correct in my Town Car. Have not done my truck yet. I went through many jugs of antifreeze prior to adding K Seal, so has definitely saved me a good bit of money as I have not had to add any after 3+ months.
Another update: I got about 5 months and the coolant is now low again in my Town Car. Saved me some money from constantly buying coolant for sure, but is no longer holding unfortunately. I put a bottle in my truck mid June 2020, we'll see how it does in that one for the slower leak.
This stuff works like a charm. But NO mechanic on planet 🌎 would ever tell a customer about this product. A mechanic stands to loose 2k dollars by tell a customer about this stuff. No way no how, he’s going to mention it.😂
I try to keep an open mind regarding new innovations. What assurance or guarantee that this sealant will go directly to the water pump? I own a 2012 Lincoln MKZ.
I want to try this product on my year 2000 fiat Punto 1.2 16v. But I also want to replace the antifreeze, should I renew the antifreeze before or after using Kseal ?
Our recommendation would be to make the repair first and then change the antifreeze. After a successful repair, any flush treatment will remove the redundant K-Seal but will not affect the repair. In this way, you can return the cooling system anti-freeze back to its original colour.
Does anyone have any long term updates with K-seal? I just added K-seal to my 2005 Jeep Cherokee with the 4.7 with a leaking heater core that was soaking the passenger floor board with coolant. Since adding this product I no longer have any coolant loss and no sweet smell coming through my vents. Just curious how long it actually last. I hope forever! Because I don't have the mechanical ability to change out the heater core.
Hey I also have a jeep but a commander and my heater core is doing the exact same thing. Could you tell me Where should I pour the kseal? In the reservoir or straight into the radiator? Thanks
Wow! Amazing! Can i ask a queation? I have Ford Everest 2004 model, when the car is running i can hear drip of water near the dash board, but i cannot locate where it is comming from, the water in the reservoir is decreasing. Is the K-seal is fit for the reservoir? Or for only radiator? Thanks.
I own a 2006 Ford Crown Victoria Police, it has a 4.6L V8, and the intake manifold has a small leak in the rear of the engine. I was told this is common on this engine and car model. When I filled the coolant reservoir up to it's cold max fill mark, it lost some coolant after driving. But the coolant level in the reservoir didn't go lower than the cold minimum fill mark, it stays at that mark. I guess at this mark the coolant level can't leak anymore out from the intake manifold. I didn't worry too much because the car doesn't overheat, and drives at normal operating temperature whether driving at normal traffic speeds or when driving fast at full throttle. So my question is. Do you think K-Seal can fix the type of cooling system leak in my intake manifold? I hope so. It will safe me a $800 or plus repair. Thank you for your products and help.
I put in my 2007 ford it stopped for about a month but now it's getting coolant in the cylinder chamber again can i use it again, truck runs fine only problem when starting have to take the plug out then starts perfect
My car Mercedes GL63 amg 2015 I have a lot of water leaking from the upper tank, and I think the head gasket. There is no smoke no hot engine no mixing of water and oil I put one bottle K-Seal but it's didn't stop leaking!! Note: Ihave changed the radiator, the water pump, the thermostat and the tank cover Question here can in use two bottles K-seal in my car and does this stop the leak ?
I recommend emailing us at info@kseal.com to discuss this coolant leak further. Simply adding more K-Seal without understanding why the first did not work is a false economy.
I have purchased this product but I would like to know the correct way to use it, after using this product should I take out the cooling water and clean the cooling cycle then pour new water or what?? Should I mix this product with water or coolant?
This stuff works wonders 10 days ago my motor was overheating to the top of the dial in 5 mins tops i thought $$$$$ i found this product on youtube searching for bars leak which i know is only a temporary fix and i saw this add for kseal read the reviews brought a bottle though its tiny it saves you big $$$$$ i filled my tank with 3 litres of water stuck the kseal inndrove in a kilometre up thevroad refilled it drove it for another 20 inutes waited in trafic at a roundabout it was Sitting on halfway it stayed that way all thevway home it looks repaired to me ill try it out this week hooefully its fixed
I have a problem on my bmw e46. I have combustion gas in my radiator . The car will overheat within 15 to 20 min of idling . I don’t know what’s wrong with it maybe a crack head or head gasket . Will this work on this car.
Almost certainly this is a failed Head Gasket. Depending on the over-pressurising a repair with K-Seal should be possible, but it would help to know a little more. You can get in touch with us via email to info@kseal.com.
MrKSeal question, I'm going to go and buy but first I want to know that if the smoke is coming from underneath the hood? I see oil on the outside of the headgasket and I see oil droppings underneath my car? My car is not overheated. Should I try to use this or do you think it's too late?
Hi, everything you mention seems to be connected to an oil leak, so please consider K-Seal is a coolant leak repair product only. If you have to top up the expansion tank or radiator with water, then it might be worth a try. If this is just an oil leak, then I do not advise using K-Seal.
I own a 2012 Lincoln MKZ, water pump sealant leak. My mechanic advised not to use this product because not only will this product seal the water pump leak it will seal every tiny hole it comes to in contact with.
Yes, just add it to the reservoir where you would usually add coolant. Let the vehicle idle for about 15-20 minutes and then just use as you would normally. The leak should subside straight away and then become permanent with the heat from an engine at operating temperature. K-Seal is still capable of making a repair over several days after adding if you do not see any immediate improvement. Rgds, Colin.
@MrKSeal hi, I used this because I think I have a coolant leak getting in through the block, piston or head gasket " I put it into the expansion/reserviour tank around 4 days ago " it stopped a leak/crack I had in the expansion tank un expectedly, but it hasn't seem to of sealed the other. Could i try another bottle and it would be safe? If so, should I try putting it directly into the side of the radiator/where the large hose connects up top? " as I dont have a radiator cap " Also I dont seem to have back pressure into the reserviour or bubbling up as a sign so I would assume it's flowing freely... Pls let me know 🙏
Hi, K-Seal can indeed repair a coolant leak associated with a water pump and you can read more on our dedicated water pump section here: www.kseal.com/expert-advice/engine-problems/water-pump
Hi, it is fine to add K-Seal into the existing coolant but I am afraid I cannot comment on the success of the repair without knowing a lot more about the symptoms you have.
Your ultimate head gasket repair could NOT fix a minor leak in my Ford Taurus 3L motor. It did not stop or slow the misty/white smoke with the dripping tail pipe.... Getting my money back, let's see if customer service honors the video I took of the process, that didn't provide the results I needed.... fingers crossed.
lasted about 2-3 weeks on my car & that was driving conservatively at less than 2000rpm. How these crooks can claim "permanent repair" & not be charged with false & deceptive claims is beyond me
Hi, we actually state permanent repair or if the same leak returns we will offer a replacement bottle. This is written on the bottle. I am at a loss to understand how this is false or even misleading?
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This stuff really WORKS! I used it in my 1994 Toyota Celica with over 342,000 mile on it and it worked like a Champ! I highly recommend this product! Cheers Mate!
Had a radiator leak in my 40 ft. Motor home in "Thumbinbut" Carolina.
Went to the local Walmart and bought K-seal.
Stopped the leak almost immediately.
Been 2 years so far and still leak free.
Got my vote 😀😀😀😀😀😀😀😀😀
This stuff works! After $5k spent on coolant pressurization issues I still had an unsolved mystery coolant leak with my big rig. I got a bottle of K Seal HD and it saved me time and most importantly money!!
Fixed 2 of my car already 1 month later still no leaks. Thx Kseal
Had my water pump leaking and used K-Seal 3 months ago. Haven't lost a drop since. Couldn't believe how great it worked.
I used the small bottle with water and it did the job ... then I drained the water changed the oil ... added coolant ... run it for ten minutes ... then added the big bottle undead the plug wire to the leaky cylinder ... ran it for 20 minutes ... topped of coolant and overflow ... ran it a few more times with all cylinders fiing at idle and it's seems to really be working great ... 😊
I used this stuff on my 94 wrangler yj 4.0. It had a leaking head out on the side of the block that I didn’t worry about for a couple years but then my radiator started to leak. I picked up a bottle of this stuff at my local o Reilly’s and within a couple minutes the leak was completely gone in the radiator and head. I couldn’t believe it! I tell everyone now that I have replaced the head gasket 😂
This stuff really works i used it on my Hummer H2 the other day and haven't ran hot since thank you K seal
Great product and it really does work. Used it in my Kenworth a few years ago when I had a leaky radiator. I drove 2,700 mi back home and probably could have drove even more. I then replace the radiator but I always keep a bottle or two in my truck.
Mike I put k seal in my Chevrolet Tahoe I had a leak and your product really works well
Can you tell me what is the difference between this product, and the K-Seal Ultimate Permanent Head Gasket Repair ?
Works! No issues three years later.
Definitely fixed my leak. It was leaking pretty bad under the radiator
Fixed a leak on my car. Thanks K-Seal.
After checking the reviews and of course trying other brands for my 05 Subaru legacy 2.5 famous leaking head gasket issue
I bought it and poured it today.
From looks of it after 5+ minutes it seems it stopped but to be sure I will update my review after a while.
I don't have to mention that Subarus are hard to fix with these products and engine can be damaged easily.
So time will tell but I am optimistic.
Wait and see.....
So how was it?
Update???
My Nissan Navara which has 235000 miles on the clock developed a leak somewhere by the cylinder head where it mates with the engine block. One bottle of K seal later and the leak stopped within 5 mins. Brilliant product well worth the money and still no leaks after 6 months.
This is for sure not a gimmick. Worked for me twice on blown head gaskets. Drove honda for at least 15,000 miles it still runs good.
Pretty amazing stuff! Fixed my leaking heater core in my 2004 Lincoln Town Car FAST! Amazing product!
How did you apply it? In the expansion tank?
My 95 Lincoln Town car was going through quite a bit of coolant, meaning the overflow tank was usually empty every time I drove. I don't have time to a proper repair right now, so thought I'd try this stuff until I do. After a couple months the coolant level is staying right where it is supposed to, knock on wood! I only had to add coolant after K Seal to get the system topped back up while it started circulating, but is now staying where it is supposed to. It's already saved me money since I was buying a lot of antifreeze.
I'm going to get some K Seal for my 2001 Ford Ranger truck as it is leaking a little around the water pump gasket, nowhere near as bad as my Town Car leak (think it was the intake manifold on my Lincoln), but I do have to top it up every couple months. Hoping this stuff helps with that one too. At the price, even if it saves me from buying two jugs of antifreeze, it paid for itself, so not really out anything.
Another month+ and coolant level is still correct in my Town Car. Have not done my truck yet. I went through many jugs of antifreeze prior to adding K Seal, so has definitely saved me a good bit of money as I have not had to add any after 3+ months.
Another update: I got about 5 months and the coolant is now low again in my Town Car. Saved me some money from constantly buying coolant for sure, but is no longer holding unfortunately. I put a bottle in my truck mid June 2020, we'll see how it does in that one for the slower leak.
This stuff works like a charm. But NO mechanic on planet 🌎 would ever tell a customer about this product. A mechanic stands to loose 2k dollars by tell a customer about this stuff. No way no how, he’s going to mention it.😂
I had a mechanic tell me today that this stuff is only good for maybe a hour. And it can cause more damage
My mechanic put it in my truck today
Fixed my excursion 2000 V8, gas great stuff 236,000 Thank you K. Seal
I am fixing to use this stuff as soon as it arrives, I will let you know if it works on my car or not.
I try to keep an open mind regarding new innovations. What assurance or guarantee that this sealant will go directly to the water pump? I own a 2012 Lincoln MKZ.
I want to try this product on my year 2000 fiat Punto 1.2 16v.
But I also want to replace the antifreeze, should I renew the antifreeze before or after using Kseal ?
Our recommendation would be to make the repair first and then change the antifreeze.
After a successful repair, any flush treatment will remove the redundant K-Seal but will not affect the repair.
In this way, you can return the cooling system anti-freeze back to its original colour.
Does anyone have any long term updates with K-seal? I just added K-seal to my 2005 Jeep Cherokee with the 4.7 with a leaking heater core that was soaking the passenger floor board with coolant. Since adding this product I no longer have any coolant loss and no sweet smell coming through my vents. Just curious how long it actually last. I hope forever! Because I don't have the mechanical ability to change out the heater core.
Hey I also have a jeep but a commander and my heater core is doing the exact same thing. Could you tell me Where should I pour the kseal? In the reservoir or straight into the radiator? Thanks
Just used it today for a coolant leak. Hope it works
It is exactly that..............its awesome stuff !
Great product!!! Fixed my heater core!! 😁😁😁
Bout to give this a try today on a 2001 Honda Odyssey hope it works
Wow! Amazing! Can i ask a queation? I have Ford Everest 2004 model, when the car is running i can hear drip of water near the dash board, but i cannot locate where it is comming from, the water in the reservoir is decreasing. Is the K-seal is fit for the reservoir? Or for only radiator? Thanks.
I don’t know what’s in this stuff but it worked for my BMW 335. I’m shocked
I own a 2006 Ford Crown Victoria Police, it has a 4.6L V8, and the intake manifold has a small leak in the rear of the engine. I was told this is common on this engine and car model. When I filled the coolant reservoir up to it's cold max fill mark, it lost some coolant after driving. But the coolant level in the reservoir didn't go lower than the cold minimum fill mark, it stays at that mark. I guess at this mark the coolant level can't leak anymore out from the intake manifold. I didn't worry too much because the car doesn't overheat, and drives at normal operating temperature whether driving at normal traffic speeds or when driving fast at full throttle. So my question is. Do you think K-Seal can fix the type of cooling system leak in my intake manifold? I hope so. It will safe me a $800 or plus repair. Thank you for your products and help.
I put in my 2007 ford it stopped for about a month but now it's getting coolant in the cylinder chamber again can i use it again, truck runs fine only problem when starting have to take the plug out then starts perfect
Yes, K-Seal can be used again, but don't forget our replacement bottle guarantee.
I don't want to replace the heater core in my 01 silverado so I'm trying it
Does this work on a 2015 Chrysler 200
K-Seal is suitable for all water-cooled engines.
My car Mercedes GL63 amg 2015 I have a lot of water leaking from the upper tank, and I think the head gasket. There is no smoke no hot engine no mixing of water and oil
I put one bottle K-Seal but it's didn't stop leaking!!
Note: Ihave changed the radiator, the water pump, the thermostat and the tank cover
Question here can in use two bottles K-seal in my car and does this stop the leak ?
I recommend emailing us at info@kseal.com to discuss this coolant leak further. Simply adding more K-Seal without understanding why the first did not work is a false economy.
What happens if k-seal freezes left inside the car and cold temperatures will it freeze
It will freeze, but with time it will thaw and should still be used.
Thanks for the video and information
I have purchased this product but I would like to know the correct way to use it, after using this product should I take out the cooling water and clean the cooling cycle then pour new water or what?? Should I mix this product with water or coolant?
You don't need to you can leave it in the system it won't do any harm...
Does this stuff work for the coolant storage tank. I have two leaks
Drop us an email to info@kseal.com to discuss further.
Does k seal work with other sealant brands
Yes, there is no known brand that would be an issue for us.
This stuff works.. used on 660r quad,,,brilliant thanks guys saved me alot of money
This stuff works wonders 10 days ago my motor was overheating to the top of the dial in 5 mins tops i thought $$$$$ i found this product on youtube searching for bars leak which i know is only a temporary fix and i saw this add for kseal read the reviews brought a bottle though its tiny it saves you big $$$$$ i filled my tank with 3 litres of water stuck the kseal inndrove in a kilometre up thevroad refilled it drove it for another 20 inutes waited in trafic at a roundabout it was
Sitting on halfway it stayed that way all thevway home it looks repaired to me ill try it out this week hooefully its fixed
Do this product works on newer cars
K-Seal is suitable for all water-cooled engines including Hybrids.
I have a small leak on my Lotus Elise ! Has anyone else used this on one?
👍Works Great 👍 follow the easy instructions, THANK'S FOR THE GREAT PRODUCT BLESSINGS TO YOU ALL 🦋 AMEN
Worked for me!!!!🙏🏾👏🏾👏🏾👏🏾👏🏾🙌🏾
Does this seat o ring leaks the o ring in my water pump leaking?
Unfortunately we do state that rubber is not a suitable material for K-Seal.
As such it is unlikely to help with an O-Ring.
I have a problem on my bmw e46. I have combustion gas in my radiator . The car will overheat within 15 to 20 min of idling . I don’t know what’s wrong with it maybe a crack head or head gasket . Will this work on this car.
Almost certainly this is a failed Head Gasket. Depending on the over-pressurising a repair with K-Seal should be possible, but it would help to know a little more. You can get in touch with us via email to info@kseal.com.
MrKSeal question, I'm going to go and buy but first I want to know that if the smoke is coming from underneath the hood? I see oil on the outside of the headgasket and I see oil droppings underneath my car? My car is not overheated. Should I try to use this or do you think it's too late?
Hi, everything you mention seems to be connected to an oil leak, so please consider K-Seal is a coolant leak repair product only.
If you have to top up the expansion tank or radiator with water, then it might be worth a try.
If this is just an oil leak, then I do not advise using K-Seal.
Did not work for me. Used this and blue devil (on seperate occasions), air bubbles were still present in overflow tank.
Air bubbles are a sign of combustion gases entering the cooling system.
What were the details of the actual coolant leak?
Im get this for my car im run low on coolit ever day hope it work thabks k seal 😎😎
I own a 2012 Lincoln MKZ, water pump sealant leak. My mechanic advised not to use this product because not only will this product seal the water pump leak it will seal every tiny hole it comes to in contact with.
Did you use it
your mechanic" Advised ?? or he "did not" Advised???
That's the risk with sealers but this one seems better than the ones you get for like $5.
So if i have a bad water pump?..Where do i pour this shyt in?..Where tha water go?
Yes, just add it to the reservoir where you would usually add coolant. Let the vehicle idle for about 15-20 minutes and then just use as you would normally. The leak should subside straight away and then become permanent with the heat from an engine at operating temperature. K-Seal is still capable of making a repair over several days after adding if you do not see any immediate improvement. Rgds, Colin.
Autozone should have it and maybe Walmart.. I would ask a friend or mechanic to do it for you so its done right.
If my cooling system uses less than 10 litres shouldn't I only be using about half a bottle?
We have instructions for very small capacity systems such as motorbikes etc. You are fine to use the entire bottle for 10-litres.
@MrKSeal hi, I used this because I think I have a coolant leak getting in through the block, piston or head gasket " I put it into the expansion/reserviour tank around 4 days ago " it stopped a leak/crack I had in the expansion tank un expectedly, but it hasn't seem to of sealed the other.
Could i try another bottle and it would be safe? If so, should I try putting it directly into the side of the radiator/where the large hose connects up top? " as I dont have a radiator cap "
Also I dont seem to have back pressure into the reserviour or bubbling up as a sign so I would assume it's flowing freely...
Pls let me know 🙏
My Ford f-150 5.4 hold 24 Quarts do I need the larger one?
That is quite a large cooling system and is over the limit for a single bottle. I would recommend out K-Seal HD brand ST5516.
i have a 95 chevy caprice wit a bad water pump will this get me by til i get a new 1
Hi, K-Seal can indeed repair a coolant leak associated with a water pump and you can read more on our dedicated water pump section here: www.kseal.com/expert-advice/engine-problems/water-pump
MrKSeal Thx fa the quick reply lol..Is this product in store? or online?
I am assuming you are in the US but please let me know otherwise. You can use our Zipcode search facility here: www.kseal.com/where-to-buy
Kita Fye no harm in trying just shake the bottle properly and pour in directly and then run it for a bit
nice northstar name drop
I have a coolant leak problem, its leaking green coolant out a lot. Can i add this k seal in with the coolant? Will it stop the leak?
Hi, it is fine to add K-Seal into the existing coolant but I am afraid I cannot comment on the success of the repair without knowing a lot more about the symptoms you have.
Your ultimate head gasket repair could NOT fix a minor leak in my Ford Taurus 3L motor. It did not stop or slow the misty/white smoke with the dripping tail pipe.... Getting my money back, let's see if customer service honors the video I took of the process, that didn't provide the results I needed.... fingers crossed.
BIG EXCELLENT!."
no working for head gasket. no need money back. any way that cost me two pack of cigarette in UK.
Hello Cristian, if there was some improvement in the coolant leak, by all means, contact us at info@kseal.com to see if we can help further.
Also, are both of these products compatible with aluminum heads ? Thank-you .......
It works..
K-Seal is added to the expansion tank or directly into the Radiator if you can access it.
this works!!!!!
"YOUR GOOD!."
This product saved me $475. Radiator repair services be damned!
2:05 northstar huh
Product does work, but its success depends on how bad of a condition the engine is in.
lasted about 2-3 weeks on my car & that was driving conservatively at less than 2000rpm. How these crooks can claim "permanent repair" & not be charged with false & deceptive claims is beyond me
Hi, we actually state permanent repair or if the same leak returns we will offer a replacement bottle. This is written on the bottle. I am at a loss to understand how this is false or even misleading?
Didn't work for me. 😢😭🤬🤬