Can You Fix a Head Gasket with a Chemical Sealer?

Today we answer an age old question: Is it possible to fix a blown head gasket with Blue Devil? Now I was just as skeptical as you so, I decided I had to find out! Will this be like the goop from the old days that never worked? Or is this something new? Watch and find out!

This is also how to use Blue Devil properly to yield the best results!




*Disclaimer: Please use all safety precautions

[shernandez]

I used Blud Devil gasket sealer last year on our 2006 Honda Accord LX. I was trying to figure out why anifreeze was spewing from underneath the reservoir cap all onto the engine. Changed the cap, changed the reservoir, changed the little reservoir hose...still the same thing. Researched and read it was head gasket going. Oh hell no I wasn’t paying $1, 200 plus for that. Came across this at NAPA and said, “ What have I got to lose except $40?” Followed the instructions to the tee including removing the thermostat. By the following day after doing the flushing and runs, the problem was solved. Kept checking it everyday as my son drove to college/home 80 plus miles round trip each day and still, no problem. And then...my son wrecked the damn car 5 months later totaling it (he was fine). But at least I wasn’t out $1200 plus on this repair!!! This stuff seriously works..but like the man says, follow the instructions as they state on the bottle label. I’m a Blue Devil believer!! Good video!!

[waynesanchez]

Used to assist in an automotive machine shop. If you're replacing a head gasket you SHOULD have that head REBUILT at the same time! Why? Because many times a blown head gasket is the rebuilt of a WARPED HEAD. That head should be checked for warpage and whether or not it can be SHAVED (machined flat). At the same time, you will have the valves, valve guides, springs, and valve oil seals checked/replaced as necessary.

[RyanNoyes]

You did an exceptionally great job producing this. Superb camera work, audio and cuts. You’re clearly equally talented at video production as you are with vehicle mechanics. Well done. Onward!

[randywl]

Thanks for the demo and the testimonial. I have a very small leak. I had an intake gasket leak that I've already corrected, discovered there's also a very small external leak behind the head. The leak is so small, I don't even have drips on the ground beneath the Just see signs of it when looking up from below the truck. It's probably best to do it now since I've already flushed the coolant multiple times, especially the heater core. I think you just gave me the motivation to go ahead and get this done so I can get some coolant back in and call this nightmare done-did.
Mine's an 88 S10.

[roxannamason]

I had this done and my mechanic said it would last 20K miles, well it lasted 29K and about a year. Time for a re-treat.- Thank you with Blessings. Ken

[asilaydying]

A lot of people always leave out a bunch of others too. When doing this be sure to read the directions on the capacity for your radiator. The yellow label is usually for V8 models depends on your radiator capacity like I said. I only used half a container for my 4 cylinder. But I’ve also done both products and the pour n go still leaves behind white residue on your thermostat and I would advise people to drain and fill on the pour n go as well. Maybe let the vehicle cure for a good day. And pour in new coolant on the pour n go along with replacing the thermostat. This yellow one the same method drain the coolant inside it and replace new coolant. Oh also when you pour in the blue devil don’t just put the cap back on. But, be sure to top off your radiator with water until full so you don’t have air in the system and last put on your radiator cap....boom you’ll be set and let idle.

[Trollet]

If people changed coolant and flush the coolant system more often the head gaskets would hold up longer. Change coolant and brake fluids are often forgotten things on older cars

[jarrodanstine]

Great video, I also like to spray everything with carb cleaner to clean off right into my throttle body so I can wash my intake valves with pieces of gasket and other debries, really make my vortec get that vortex...

[interstate.]

I found mine very early. The only reason I discovered this was because I was fixing an unrelated coolant leak and just happened to see some minor symptoms. I’ll give this a shot and hopefully it’ll work. I need it to because I can’t afford to replace the head gasket

[pgk]

I have used this product and it is good/fixed. Follow instructions to a tee! I have a 4 cyl. that only has 5qt capacity of coolant. I needed ONLY 1/2 bottle! Not the whole thing. Call customer service # if you have questions....GREAT advise. Great video... maybe too much product used.

[adrianjones]

It work I did it and it have not ran hot yet so I recommend this before you spend a whole bunch of money

[dxnjqjg]

1:43 i used a different one without removing the thermostat and it definitely broke my thermostat, but i think it fixed my head gasket because no more leaking coolant

[japfourme]

Hi mate, great video. One point though there does seem to be two versions of the same product. One version you have to remove the thermostat etc and the other which is called “pour n go” you don’t have to. Don’t know whether the formulation is different but just different instructions to follow!!

[worldwidesportsk]

I'm 3 years in the blue devil game, and it works great on small pin whole head gasket leaks.

[slimyaya]

There should have been some sign of the old oil on your dipstick. Its hard to believe that the oil change removed all of the contaminated oil. It would only take a little of the old oil to stop that clear oil on your dipstick

[kyhleelliot]

Great video well done got the same result one thing never run just water coolants are also lubricant for your water pump

[Willzfrugal]

Great video and great idea! I wouldn't recommend running straight water though. Water isn't kind to internal parts. 50/50 = happy coolant system. 🙂

[ironbitch]

I guess my comment would be maybe you could drive the vehicle for 1000 miles I think that would really truly confirm the stuff works thanks for the video

[burtlandcastor]

Great That engine likely had/has a leaking intake gasket. Oil contamination with coolant is generally a leaking oil cooler core in the radiator or a failed intake gasket in those 4.3l Vortec engines. Blown head gaskets are rare on them and compression leaks into the coolant are usually cracked heads.

[roguewarr]

If that is a code r 350 (5.7) engine, And the engine has a lot of miles and the engine has never had any major engine repairs . I would for sure replace the broken plastic intake gaskets, Biggest source of coolant leaking into the engine oil is the broken plastic intake gaskets around the water outlets of the cylinder heads. After that repair is done, and you still have issue ( you overheated the engine ) then you should try Blue devil . Speaking from A GM tech who has done these repairs a lot . depending on how bad the condition Blue devil may work