Head Gasket Sealant
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BlueDevil Head Gasket Sealant

Part No. 38386 Warranty  
Blue Devil Head Gasket Sealant will repair and seal leaks in blown head gaskets, warped or cracked heads, heater cores, and freeze plugs. Blue Devil contains no solid or particulate matter, and will not clog or harm your engine. It bonds to metal, aluminum, cast, alloy, or plastic, and its safe and easy to use. Blue Devil is compatible in gasoline and diesel engines.

Product Features:
  • Permanent repair for Head Gaskets, Warped or Cracked Heads, Heater Cores , and Freeze Plugs
  • Contains no solid or particulate matter that can harm engines
  • Alternative solution for costly, or time consuming repairs
  • Safe and easy to use
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Antifreeze Compatible:Yes
Container Size:32 OZ
Container Type:PLASTIC BOTTLE
Count:1
Dosage:1 BOTTLE TREATS A 4.5 GALLON SYSTEM
Heater Core Leaks:Yes
Lubricates Water Pump Seals:No
Permanent Repair:Yes
Type:SODIUM SILICATE

REVIEW SNAPSHOT®

by PowerReviews
BlueDevilHead Gasket Sealant
 
3.7

(based on 63 reviews)

Ratings Distribution

  • 5 Stars

     

    (35)

  • 4 Stars

     

    (6)

  • 3 Stars

     

    (5)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (16)

71%

of respondents would recommend this to a friend.

Pros

  • Easy to use (35)
  • Reliable (20)
  • Can withstand use (10)
  • Compact (4)

Cons

  • Difficult to use (3)
  • Flimsy (3)

Best Uses

  • Home garage (39)
  • Automotive repair shop (16)
  • Roadside repairs (5)
  • Upkeep (3)
    • Reviewer Profile:
    • Casual driver (8), Auto enthusiast (6), Mechanic (5)
    • Reviewer Profile:
    • Auto enthusiast (16), Casual driver (14), Mechanic (11), Truck enthusiast (4), Competitive driver (3)

Most Liked Positive Review

 

Solved Overheating Problem

Fixed cracked head causing overheating problems. Internal leak was losing a few ounces of coolant each day and introducing gases into coolant that required continual bleeding of system or overheating resulted. Once gasses bled...Read complete review

Fixed cracked head causing overheating problems. Internal leak was losing a few ounces of coolant each day and introducing gases into coolant that required continual bleeding of system or overheating resulted. Once gasses bled after car started and warmed up, car would not overheat. White smoke on warm up that would go away after leaked coolant boiled off. Crack would allow coolant in cylinder when cool and open, but would expand into itself when hot and close. BlueDevil Company recommended removal of spark plug in damaged cylinder (required compression diagnostic to determine which and gas test for the coolant) to improve chances of repair--common advice seen online with mechanics, too. Carefully followed instructions on bottle, otherwise. Cylinder carbon purged when compression improved. Thick black smoke from tailpipe eventually went away after some driving. Seal has held for a week of driving. While I would recommend a proper headgasket and head replacement for a newer car, this has worked so far to repair an old car not worth the amount of the repair job, which would have been around $1100 for the head gasket replacement and a few hundred more for the head itself. Our goal is to give us time to save money for another car. We have read online from non-company sources that the seal can last anywhere from 3 months to 3-1/2 years, and that a reapplication usually is successful. There is enough product in the 32 ounce bottle for two treatments of a 4 cyl engine. If you have a screw bleeder valve at the thermostat housing, and it has a small leak, that will seal too, so make sure it is tight and closed or put something slippery in the threads to prevent the sodium silicate from crystalizing and adhering there and locking it up.

VS

Most Liked Negative Review

 

Causes more problems than it solvesevil

Do not put this [*] matter in your cooling system unless your car is going to quit forever very soon. In April 2011 I had a number 4 cyclinder misfire problem and used...Read complete review

Do not put this [*] matter in your cooling system unless your car is going to quit forever very soon. In April 2011 I had a number 4 cyclinder misfire problem and used my portable digital scan reader to diagnose the problem. I proceeded to buy and use the Blue Devil Head Gasket Sealant for the problem. I followed the directions on the bottle to the letter. One of the directions was to close off the interior heater before starting the car, driving the car, and then allowing car to cool off completely before reopening the heater core, which i did. It was April and the weather turned warm and stayed that way until October. Then was when I discovered that my interior heater would not work. I went back and forth to my mechanic. I replaced the radiator and water pump. Also had several flushes and back flushes done. Finally the mechanic scrubed the cooling system hoses and block. Whiteish gray pebbles came out of this scrub job according to him. Now the heater works OK after spending almost 1K on fixing this problem. In late January 2012 I e-mail the USA Sealant Company explaining the problem, expense, and to be reimbursed. We e-mailed back and forth and talked on the phone once. The final conclusion was that they will not pay any of my expenses. I did get a refund for the bottle at the auto parts store. The clerk there did say that this product would restrict and potentially block portions of your cooling system. Buyer beware this junk.

Reviewed by 63 customers

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5.0

It worked for me

By The Preacher

from Augusta Ga.

About Me Casual Driver

Pros

  • Easy To Use

Cons

    Best Uses

    • Home Garage

    Comments about BlueDevil Head Gasket Sealant:

    Tried the product last summer, still driving my 96 Taurus
    no more issues with head gasket so far. It worked for me.

    Comment on this review(earn points)

     
    5.0

    BLUE DEVIL works GREAT

    By Naquin57

    from Memphis,TN USA

    About Me Casual Driver

    Verified Buyer
    Level 2

    Pros

    • Can Withstand Use
    • Compact Design

    Cons

      Best Uses

      • Home Garage

      Comments about BlueDevil Head Gasket Sealant:

      Be sure to read and understand before you start

      Comment on this review(earn points)

       
      4.0

      I'm a believer

      By Dano

      from Ft. Lauderdale.

      About Me Auto Enthusiast, Backyard Mech

      Pros

      • Reliable

      Cons

      • Difficult To Use

      Best Uses

      • Home Garage

      Comments about BlueDevil Head Gasket Sealant:

      I installed a new water pump and radiator in a friend's beat up 97 Explorer... but before i even took it out for a test drive, I found another serious leak behind the engine block on the passenger side. TOTAL FRUSTRATION! Even with a mirror, I couldnt get a proper visual to tell if it was from the head gasket or a freeze plug. With no wad of cash left for head work, I consulted my EXCELLENT mechanic friend. He told me about BLUE DEVIL and explained how important it was to *follow the directions carefully* I'm a huge skeptic of miracle cures so i did hours of internet research but found NO real examples of it being used to fix leaky freeze plugs... which it claims to do. I finally broke down and bought some anyway... and followed all the directions, using only half the bottle. In less than half an hour... no more dripping!!! I let it run for the full hour. Too tired for a test drive and with almost no gas left(oops), I shut it down for the night. We tested it the next morning and it has worked fine ever since.. that was almost 2 months ago. I dont know HOW it works... I just know it DOES. I hope i never need to use the rest of the bottle... but i'm hangin onto it just in case.

      Comment on this review(earn points)

       
      5.0

      I would use this product again

      By goghb

      from Monroe

      About Me Auto Enthusiast, Casual Driver, Competitive Driver, Mechanic, Truck Enthusiast

      Verified Buyer
      Level 1

      Pros

      • Can Withstand Use
      • Compact Design
      • Easy To Use
      • Great It Works
      • Reliable

      Cons

      • None

      Best Uses

      • Automotive Repair Shop
      • Home Garage
      • Roadside Repairs

      Comments about BlueDevil Head Gasket Sealant:

      It works great

      Comment on this review(earn points)

       
      1.0

      Waste of time and money product.

      By Bolt

      from Dorraine, Pa.

      About Me Auto Enthusiast, Competitive Driver, Mechanic, Truck Enthusiast

      Pros

        Cons

          Best Uses

            Comments about BlueDevil Head Gasket Sealant:

            Did all the procedure as directed, and actually the product made the problem worst. My advice over price waste of time, which means price does not make a good product.

            Comment on this review(earn points)

            (1 of 1 customers found this review helpful)

             
            5.0

            Really Works

            By Brock

            from Bloomdale, OH

            About Me Mechanic

            Ask me a question

            Level 4

            Pros

            • Easy To Use
            • Reliable

            Cons

              Best Uses

              • Home Garage

              Comments about BlueDevil Head Gasket Sealant:

              It surpised me that it actually worked. I did make sure I follow the directions including flushing with water and a cleaner. If it lasts a year I will be happy and then I will just do it again. Great product but read the reviews so you make sure you do it right.

              Comment on this review(earn points)

              (2 of 2 customers found this review helpful)

               
              4.0

              It Works

              By T-Richard

              from Tuckerton, NJ

              About Me Casual Driver

              Ask me a question

              Verified Buyer
              Level 2

              Pros

              • Easy To Use
              • Reliable

              Cons

                Best Uses

                • Automotive Repair Shop
                • Home Garage

                Comments about BlueDevil Head Gasket Sealant:

                Used it more than once. Saved a major expense of replacing head gasket.

                Comment on this review(earn points)

                 
                1.0

                Didn't help

                By Avianaut

                from FL

                About Me Auto Enthusiast

                Verified Buyer
                Level 1

                Pros

                  Cons

                  • Flimsy

                  Best Uses

                    Comments about BlueDevil Head Gasket Sealant:

                    Didn't help the head gasket leak and clogged up my water pump.

                    Comment on this review(earn points)

                    (1 of 3 customers found this review helpful)

                     
                    5.0

                    Awesome Product it works!

                    By Goodmanheelzfan

                    from Charlotte, NC

                    About Me Auto Enthusiast

                    Level 1

                    Pros

                    • Easy To Use
                    • Reliable

                    Cons

                      Best Uses

                      • Home Garage
                      • Roadside Repairs

                      Comments about BlueDevil Head Gasket Sealant:

                      2001 Dodge Dakota with bubbling radiator overflow tank and running hot in the winter. Removed thermostat, flushed system, rinsed system, sat overnight and added 16oz as directed and ran for 50 minutes. Let cool and drove for a day without the thermostat and the bubbles were gone and overheating issue is gone. Added thermostat and antifreeze back in and it is running as good as new. 198,000 mile engine and I hope this lasts another 100,000 miles. Saved me a $1500 head job on a 200,000 motor.

                      Comment on this review(earn points)

                       
                      5.0

                      Works like a champ

                      By mark

                      from Virginia beach, Va.

                      Comments about BlueDevil Head Gasket Sealant:

                      Follow the directions, blue devil worked for a 98 olds 3.8 bellowing white smoke and producing cylinder mis-fires due to coolant entering the cylinder...been chasing this problem for months..thought it was the intake manifold leaking...flush, flush and flush...add blue devil to a cold motor very slowly like the bottle says...20 min later white smoke stopped ...let it run for an hour and took her for a test drive..smooth idle and drives the best it ever has...no bull...i read all 54 reviews before i bought it and i feel the people that it did not work for maybe didn't prep good enough.

                      Comment on this review(earn points)

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                      Do you have questions about this product?(earn points for answers!)

                       

                      Ask a question, get answers from real customers and in-house experts. Or contact Customer Care by email or call 1-877-238-2623.

                      130 Questions | 143 Answers
                      Displaying questions 1-10Previous | Next »
                      • Q:

                        do I have to remove my thermostat when using Blue Devil sealant
                        Asked on 9/8/2014 by charlie from canton ga

                        2 answers

                        • CUSTOMER CARE

                          A:

                          Yes Charlie, you will need to remove thermostat to use Blue Devil sealant.

                          Answered on 9/9/2014 by Steve from AAP
                        • CUSTOMER CARE

                          A:

                          Yes Charlie, you will need to remove thermostat to use Blue Devil sealant.

                          Answered on 9/9/2014 by Steve from AAP
                      • Q:

                        hi,
                        do you shipping to italy?
                        thanks
                        Asked on 8/11/2014 by olga from Italia

                        1 answer

                        • CUSTOMER CARE

                          A:

                          Hi Olga, glad to assist you! At this time we only ship to any United States and APO/FPO addresses. Shipping to international addresses may become available at later date. Please watch for more information on our new website as it becomes available!

                          Answered on 8/14/2014 by Vincent from AAP
                      • Q:

                        I have a cracked block on a 1999 ford mustang will this work for my car
                        Asked on 5/29/2014 by terri

                        1 answer

                        • CUSTOMER CARE

                          A:

                          Hi Terri, glad to assist you! This product will repair and seal leaks in blown head gaskets, warped or cracked heads, heater cores, and freeze plugs. It bonds to metal, aluminum, cast, alloy, or plastic, and its safe and easy to use.

                          Answered on 5/30/2014 by Steve from AAP
                      • Q:

                        I have a 2003 Saturn Ion 2 2.2L.It don't have a cap on the Radiator it has a coolant holding tank that leads to Radiator.Will this Blue Devil Head Gasket Repair be ok to stick in the Coolant holding tank?
                        Asked on 4/20/2014 by mike from Latonia Ky

                        1 answer

                        • CUSTOMER CARE

                          A:

                          Hi mike, I'm glad to assist you! If your vehicle has a reservoir/overflow rather than a radiator cap, instead of pouring it through the reservoir/overflow, with the car off and engine cold, you may add the product through the top radiator hose. Once it has been added reconnect the hose and start the idle from that point.

                          Answered on 4/21/2014 by Steve from AAP
                      • Q:

                        will the blue devil help me on my head gasket in a 2006 dodge stratus? its a 2.7 v6 and i just dont have the money and i need it to be safe and reliable for my 1 year old....
                        Asked on 4/14/2014 by Victoria from Newark

                        1 answer

                        • CUSTOMER CARE

                          A:

                          Hello Victoria, Yes, BlueDevil Head Gasket Sealant wil permanently seal a leaking head gasket.

                          Answered on 4/15/2014 by Wil from AAP
                      • Q:

                        I have a 1995 pontiac grand am with a blown head gasket, would this product help fix it or at least slow the leak?
                        Asked on 3/28/2014 by ivanrarri

                        1 answer

                        • CUSTOMER CARE

                          A:

                          Hi Ivanrarri, glad to assist you! This Blue Devil Head Gasket Sealant will repair and seal leaks in blown head gaskets, warped or cracked heads, heater cores, and freeze plugs.

                          Answered on 3/30/2014 by Steve from AAP
                      • Q:

                        will it seal hoses leaks and small head leak and plugs in block
                        Asked on 2/2/2014 by roughhouse from minor hill tn

                        1 answer

                        • CUSTOMER CARE

                          A:

                          Hi roughhouse, glad to help you! The BlueDevil Head Gasket Sealer will repair and seal leaks in blown head gaskets, warped or cracked heads, heater cores, and freeze plugs. BlueDevil contains no solid or particulate matter, and will not clog or harm your engine. It bonds to metal, aluminium, cast, alloy, or plastic, and it’s safe and easy to use. BlueDevil Head Gasket Sealer is compatible in gasoline and diesel engines. It stops leaks permanently.

                          Answered on 2/4/2014 by Steve from AAP
                      • Q:

                        Can this be used again if the same problems starts again?
                        Asked on 1/23/2014 by lori

                        1 answer

                        • CUSTOMER CARE

                          A:

                          Hi Lori, happy to help! Yes, the sealant can be used again to repair and seal leaks in blown head gaskets, warped or cracked heads, heater cores, and freeze plugs.

                          Answered on 1/24/2014 by Steve from AAP
                      • Q:

                        Hello AAP I have a 03 buick century it starts to over heat 10 mins into ridingap replace radiator water pump now i see bubbles by the heat sensor is that a sign of my gasket being cracked
                        Asked on 1/3/2014 by Maurice from United States

                        1 answer

                        • CUSTOMER CARE

                          A:

                          Hi Maurice, great question! Bubbles in the heat sensor may be a symptom of gasket being cracked. However, the answer to this is bit more complicated than you think. This needs an expertise to determine. I would suggest taking your vehicle to a certified mechanic for a proper diagnosis before buying and having parts installed that may not solve or be the problem.

                          Answered on 1/5/2014 by Vincent from AAP
                      • Q:

                        I have a 1998 Chevrolet lumina the water and oil is mixing will blue devil head gasket sealant stop this
                        Asked on 12/29/2013 by boo from bonifay, fl

                        1 answer

                        • CUSTOMER CARE

                          A:

                          Hi Boo! Good question. This sealant will stop the leak permanently for head gaskets, warped or cracked heads, heater cores, and freeze plugs.

                          Answered on 12/31/2013 by Morgan from AAP
                      Displaying questions 1-10Previous | Next »

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