K-Seal Avaliações 530

Best chemical ever made worth money
Works 100 %
Blessings

My car Mercedes GL63 amg 2015
I have a water leaking from the upper tank, and I think it's the head gasket. There is no white smoke no hot engine no mixing of water and oil
I bought K-Seal from amazon and I followed the instructions behind the package i put one bottle in the coolant system but it's didn't stop leaking!!
Note: Ihave changed the radiator, the water pump, the thermostat and the tank cover.
Is there any other advice?
If i put two bottles does it work to stop leaking?

1987 Chevrolet R-30 Dually
Engine: 5.7L(350) TBI (cast iron block and heads)
Mileage: 390,000 total / 44,000 since major overhaul
Problem: Had to add 1-2 pints coolant to reservoir after two heat/cool cycles and bubbles in coolant reservoir when the engine is running.
I have owned this truck 33 yrs.
I have read at least 100 reviews of K-SEAL and have not seen a vehicle this old with a coolant loss problem. When I had the engine overhauled the machine shop crack-checked the heads and reported no cracks found. At about 30,000 miles since overhaul I changed the water pump. Being an older truck it uses the Green coolant. After changing the water pump I topped-up the radiator and reservoir with DEXCOOL. [I found out later that mixing the Green coolant and DEXCOOL is not good!!] Checked the radiator about 10,000 miles later and there was reddish/brown sludge/jelly in it. I pulled the heads and took them to the machine shop to be cleaned and checked(the machine shop said no cracks were found). While the heads were off I flushed the block, radiator and heater core. I installed the heads with new head and intake gaskets. I don't know if a head is cracked or the block is cracked or a leaking gasket. The only symptom is coolant loss in reservoir and bubbling in reservoir while the engine is running. No vapor at tail pipe. I consulted K-SEAL tech support and K-SEAL ST-3501 was recommended. I began the process with a cold engine. I removed (5) quarts of coolant from the radiator. I shook the K-SEAL product for 5 minutes. I wanted to be sure it was mixed good. I poured the product in a clean (1) gallon jug and filled it the rest of the way with fresh Green coolant. I serviced the coolant tank with fresh coolant. I started the engine and let it run for 5 minutes. I shook the jug of coolant and K-SEAL mix then poured it slowly into the radiator while the engine was running. I replaced the cap and let the engine idle for 45 minutes. I shut the engine down and let it sit until the next afternoon. I ran the engine again at idle for 30 minutes. Later that day I drove the truck about 30 miles. The next morning I checked the reservoir level- NO COOLANT LOSS!!!! Since then, I have driven the truck about 200 miles consisting of 15 heat/cool cycles. Still no coolant loss in reservoir!!! I have not drained and flushed the radiator/engine since adding the K-Seal. Heater works great. If you have a similar problem like mine, before you act call K-SEAL tech and consult with them. Follow their instructions exactly. I know this is a very long review but I wanted to give as much info to maybe help someone keep their truck on the road.
I recommend this product
UPDATE: 1/16/2023. K-SEAL repair still working after
2,000 mi. and over 60 heat/cool cycles! I am very pleased with this product and the customer support.

So i purchase a 2013 bmw 328 never will buy a 4 cylinder engine i didn’t know what i was thinking ,when all the cars that i have purchase prior were all 6 cylinder , so i made a call to K-seal back in july so i went to the pep boy so i brought the K-seal Ultimate i was having grey smoke coming out the and the engine would sound like a jet engine i took the car to the shop they said my Gasket need to be change they told me to sale the car i was like only using this car to drive local area sense i have the x6 as back up now its November 21 2022 days before thanksgiving i start three day in the row no smoke and when i start the car the engine is quiet im amaze with this product it works like a champ the reason it took so long for me like said i don’t take it out of state like that i give it a 5 star you just have to be patience with it

I recently had a leak from my radiator. I looked on Amazon for a top selling radiator repair like stop leak. I found K-Seal and gave it a try. It stopped the leak. I highly recommend it. Thank you K-Seal!

Had a leaking heater matrix and loosing coolant and windows fogging up and smell of coolant.. been over 10k and this k seal bottle is a absolutely amazing thing very highly recommended.. doesn't loose coolant.. no smell of coolant inside car and when heaters on windows are not fogging..

What can I say had a leak or crack in my radiator used k seal and it totally repaired so grateful worked for me 😂

Used it on my 2013 Ford Focus SE but took @ 20 minutes before it stopped the leak. Next morning I found dripping again on the driveway and it got worse, so I went again to the store and bought another 8 oz bottle and put it inside reservoir tank as per instructions, thinking this will reinforce but nothing happened, leak got very bad as I drove the car. After calling Customer Service number for help (609-261 4242) someone named Max or Matt said won’t honor any warranty or refund as advertised just because I added two bottles of the product to the car. From now on, every time I am at an auto parts store and see someone attempting to buy this product, will let them know about my very disappointing experience with this product and with the answer of their so called “customer service”

Sorry no stars here - just used K-seal to repair leak in radiator Kia Sedona only a slight drip but no such luck for me ! need to find an other product or replace radiator. Disappointed
Mel B

I'm an old man and over the years have used just about every stop leak product from "water glass" on with usually poor or horrible results. Recently my car blew a head gasket and was blowing coolant out the tailpipe. I didn't have the money to have the gaskets replaced so I tried several brands of stop leak. Nothing worked until I found K-Seal. Fixed in minutes and has stayed that way for three months. I
don't know how you did it but thanks a million.

I don't generally buy into miracle cures but know, from experience, that some products can deliver a 'cure'.

I have a 1974 Ford F600 truck that had a leaking radiator. After resoldering the tank I found there was still a 'weeping' tube in the radiator's core. A 'new old stock' radiator runs $800 - $1200 depending on the vendor so this old truck was NOT going to go that route!

Did some online research into products and found that K-Seal was highly recommeded by others with older, metal tank radiators.

Why not? Beats buying a radiator or having it recored, right?

Let the engine warm up after siphoning off 1/2 gallon of coolant which I then added 1/2 bottle of K-Seal to (after shaking per instructions).

When the radiator started steaming, I added the coolant with K-Seal mix back in and replaced the radiator cap.

1/2 hour later the radiator was dry as a bone and the engine idling happily along - makes this old guy happy to save a few dollars while not doing damage to my truck.

Many thanks to the folks at K-Seal for a fine product!

Totally not working , just made bigger mess and foam in expansion tank , waste of money

I'm sitting outside autozone with a coolant leak still I used bar's the 1st time since I have cancer and cannot afford a head gasket I'm reading all the reviews so I'm hoping this will work since I'm unable to afford much .hospital bills and life bills are tough enough so I'm really hoping this will work till I'm not able to drive anymore .I'm 33 and just really hope this will work

Had a coolant leak somewhere round the back of the engine block on a 23 year old Ford Fiesta. Think it a freeze plug but could not really tell due to access restrictions. Was only leaking under pressure not dripping when engine cold. Car lost about half a litre of coolant every 100 miles so quite minor overall, and was topping up every week. Used HALF BOTTLE of pour and go in header tank, 60 miles later, coolant would previously have dropped to about halfway between min and max, but now just down 1/4. I assume some coolant still lost prior to the product making its journey from the header tank into the engine. Will be monitoring it from next top up at 100 miles, and checking every week

I was pulling a 30' camper with my Hummer H2 when I started loosing antifreeze. Looks like the water pump seal was giving out on me. I stopped at AutoZone and purchased K-Seal and added it to my water reservoir and to my surprise the leak was gone in about 3 minutes! Still 4 weeks later and no leaks and no engine problems! Thank you K-Seal 👍

David Mullinax of Ellijay Ga

I have been in the parts sales field for over 10 years. I have seen K-seal not only seal small but also very large leaks that I thought there was no hope AND IT LASTED months to years....sometimes it outlasted the rest of the vehicle. This is the only product to buy for coolant leaks. Please never buy one of those tar/sludge sealants they will cause you more trouble down the road where K-seal just provides you with more protection down the road!

I used KSeal in my car a Renault Megane, Did everything according to the instructions.. absolutely useless. the car continues to lose coolant. A complete waste of money.
Response to K Seal's reply. ..
The symptoms are air bubbles in the expansion tank, no overheating no smoke, Followed all instructions on the bottle.. it did not work. What more can i say?

Used this on my work runner a small holden barina, to be fair I didn’t expect it to work but was pleasantly surprised hasn’t used coolant since and it has stopped mixing with the oil all though it was only a small leak I was impressed

I had a head gasket leak, my mechanic confirmed it. It was leaking coolant and needed to be refilled about every week and a half but the car ran and as long as I kept adding coolant it work.
But with winter coming up I knew I needed to do something about the issue if i wanted to save my wallet in the future, I read k-seals sight and based on the confidence and seeing no downside purchases some.
Followed instructions ran the car for 8 minutes up to operating temp, turned it off, drive it to the store, all was well, parked it. Wake up the next day, take it out get 20 miles out of the city and boom, engines hot, I step outside and see this trail of coolant behind me and I’m standing in a puddle. Pop the hood the cap blew off and the tank is EMPTY, all gone!
Fill’er back up and think at least I can keep filling it. WRONG under a quarter mile down the road and I gotta stop again, luckily I didn’t get run over but the tank is pulsing up and down and spurting out coolant. Luckily though I don’t have to worry about my other leak, just an engine that has no cooling and runs for a minute at a time instead of a week and a half…

After viewing said reply I have reached out and have not heard a response, will update as they come.

After reaching out a second time purely about a refund I got a reply. Also instructions for k-seal bottle listed 5min ( or had no time constraint and I got the 5 min from the internet ) but even so the engine work for about an hour after adding it and it worked before adding it but after adding it stopped working.

Buy this product!!

When it comes to my vehicle, I am probably the most anxious person ever. So, when I started to lose coolant at a very fast rate, have some smoking, etc. my anxiety skyrocketed. I had many of the warning signs of an impending head gasket issue. I researched what I should do, how I should fix it, and I came across K-Seal. I was skeptical to say the least at first, because I have read horror stories about how people have put sealing products in and then their engine and other vital components get gummed up and end up breaking. I reached out to an absolutely fabulous gentleman that I saw responding to reviews on this website and spoke with him via email about my vehicles symptoms, overloaded him with questions, etc. I felt confident after chatting with him that K-Seal was going to help (and at the very least not hurt) my vehicle.

I followed the instructions on the package (July 2022) for adding the K-Seal and monitored my vehicle like crazy in the following days/weeks. I was nothing short of amazed when I noticed that my vehicle was actually holding coolant and all the issues I was having related to this problem before were not happening anymore! There was only one instance about a month later where I had lost a decent amount of coolant, but I believe it was related to extremely hot weather temperatures since this was the summer (August 2022) and we were going through a heat wave. Once I filled my coolant, there was no loss anymore. I had contacted the same gentleman I corresponded with and he agreed it was more than likely due to the heat, and was kind enough to send me another bottle in the mail to use in the event that I had to. I've not yet had to use it, but if I do then I am confident in putting this product in again!

I have a 2005 Jeep Grand Cherokee, and it is my life. I live in the mountains so there is no public transportation, and I also own my own house cleaning business so I rely heavily on my vehicle and cannot be without it. I cannot recommend this product enough for those who have coolant/head gasket issues. If you are anxious like I was, reach out to K-Seal and talk with them first to see if this will help you - they will respond! It will help to ease your concerns, I promise you.

Thank you, K-Seal, for helping me keep my vehicle running! I will recommend this product to anyone in my situation or similar! :)

-Heather, from New Hampshire, USA