Blue Devil Failed! You Recommended K-Seal, Will It Work & Seal The Forester's Head Gasket Leak?!

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[lunapsebennarok]

It works under pressure.

You have to close off the system for it to build pressure.

Shut it off to allow it to cool.

As it seeps, under pressure, it will seal the leak.

I've used it to seal cracked blocks and heads.

Key words: "pressure differential."

If there's no pressure, it won't seal the leak.

[bullnukeoldman]

In 1958 the USS Nautilus had a leaking condenser onboard - it was critical to repair the leak as the ship was about to make the famous transit under water and across the North Pole. The Captain had the crew scour around Seattle for Stop Leak (now Bars Leak), a radiator leak stopper for cooling systems. 140 quarts were found and added; the system sealed and the Nautilus made its historic voyage without any further problem. But, a bit different from a Subaru head gasket leak...

[shafter]

K seal sorted out the leak in my head gasket on a Primera P11 years ago. I drove it another 30, 000 miles or so and it was still running when I sold it. That was a 2.0L and about 170bph. On my H6 Legacy Spec B though (model year 2008) it didn't work. Worked initally but within about 200 miles the plug would fail! Ended up selling it to them traders that pay jack-all...

[uwannadance]

2 big bottles of Barr's Stop Leak and running for an hour works every time. My ex's car was smoking, did that and it ran for another 3 years before trading it in.

[marktarter]

Just this week I fixed a 2017 Silverado that was puffing smoke. I used Blue Devil. Took about 4 heat ups and cool downs, but it worked very well. no more over pressurization of the coolant system. No more water in the oil. No more smoke. Pretty pleased with it.

[lamkask]

We had a small leak in our Nissan Xtrail in the past and used sealant from Liqui Moly with some glittery stuff inside of it. I can't find it online right now, but I can tell you how it worked. So maybe, just maybe, this stuff works the same.
At first, coolant was still leaking even after recommended 30 minutes of driving, so we just kept adding distilled water and after maybe 200-300 kilometers, it stopped leaking and lasted about 2 years. After those 2 years, it started leaking a little bit again and we repeated the same process and again, after 200-300 kilometers, it sealed everything up.

[d-rockanomaly]

People always make videos on this stuff and then they use it wrong and then say it's a bad product. Pretty sure the cooling is like a key part of the setting process. Also this stuff is meant to fix completely blown gaskets or I don't know how bad yours is but these are mostly more effective when you just first start noticing symptoms of a bad gasket. They were good for that no one says it's going to miraculously replacing the entire gasket.

[buckaroobonsi]

I have used K-Seal on 2 Toyota's and 1 Saturn radiator leak and it worked each time and still holding strong. I have the radiators on hand but since the K-Seal worked I have left them alone! Never tried head gasket in a bottle though!

[ibcrypto]

I think no matter which product. If your getting combustion gas in cooling system - find the cylinder and remove the plug and heat up/cool down 4-5 times then let cure 24 hours. Most of the products include theses steps under advanced applications.

[notsure]

I used one of the small bottles of K-seal and it stopped antifreeze from entering my oil. Didn't clog heater core or radiator or thermostat. 6k miles later and no issues. Though I did flush it 300 miles after using k-seal.

[MrPoppyDuck]

Used the regular KSeal to stop a slow heater core leak probably five years ago. Still holding strong! That is too bad that the KSeal head gasket sealer didnt work.

[leidarodriguez]

I just used the same kseal and it worked on my 2012 Subaru Impreza.

[eric]

Try Sodium Silicate and water mix aka water glass i bet its gone after that as they dont sell it anymore in stores. Ive used it before on a 96 grand prix with a 3.1 and my sister drove it for about 10 years.
She sold the car and i used to see it around.
Also you have to put the cap on after you get most of the air to stop then drive it around for a day, check it the next day and it theres no more bubbles, then drain the system completely and the sit with the hoses off to let and circulate through the system over night. They add 50/50 mix bleed and all should be well.

[erosas]

I tried the rislone, nulon and k-seal head gasket fix and none of those fixed the issue on my Subaru liberty(legacy). I tried in other engines like GM Cruze and ford focus and it worked great. I think it is something related with the horizontal boxer engine design.

[timin]

I hate using chit like that...but I have used it. In my 2001 Forester it let me drive for 2 more years before another problem made me swap in a rebuilt engine. I would recommend using way less than recommended and later work more in as needed

[michaelstevenfriedlander]

K Seal worked on my Hyundai Head Gasket, still working ! CRC didn't work at all. Take the thermostat out before you pour the sealer into the cooling system.

[DaleGood-oyky]

I've used K&w fiber lock many times that will definitely fix it!

[julianfisher]

Well you're looking for a magic fix in a bottle, over the pond here in the Uk try Steel Seal. An engineer gave me this tip years ago
& I swear by it ! Out of all the times i've used it, it has only failed once on a seriously overheated head gasket. About ten years
ago I had a hair line crack in my cylinder head by No.1 injector, tried Steel seal and it fixed it.Have never had the problem reoccur. It's
made here in the UK but hope you give it a try if it's available over there ?
Really appreciate your video's & advise, please keep them coming. Julian.

[feeneysauto]

I actually seen that blue devil stuff seal a head gasket on a 3.4 impala that had a misfire from the head gasket being bad. It was a customer that didnt want to pay to fix it and I told him if you use that crap its gonna cost you more money because that stuff gets everywhere in the system. When he brought it back a week later i took the heads off and you could see where the sealer did seal where the gasket failed there was all this hard white stuff around it so the sealer must cure when it gets to exhaust gasses. The sealer plugged up the water jackets around that cylinder so it obviously got hot and made the sealer fail lol.

[cade]

Blue devil worked for me just throw it in and drive it around like normal and dont drain it. Needs the system to pressurize to work the best and when i did it took about a week of driving to fully fix the head gasket. Yes not a permanent fix but it will get you by in the mean time and didnt matter in my instence after about a year and half after the head gasket went south the trans crapped out and then i sold it as is