- Custom Mixed Head Gasket Formulas For All Engines
- Ultra Hi-Strength Engine Oil Stop Leaks
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www.myDuraSeal.com

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mackcaddie27

Join Date: Feb 2012
Location: TIMMONSVILLE,
South Carolina
Post: 18
Thanks: 4
Thanked 3 Times in 5 Posts
Anyone tried that dura seal head gasket sealer?
Just bought a 02 deville and its starting to overheat! I'm also losing coolant. I've had caddies before so I know its the damn head gasket going out on it... I've used blue devil before and it didn't do anything for me
hotrodder55

Join Date: Apr 2010
Location: RENO,
Nevada
Post: 437
Thanks: 14
Thanked: 93 Times in 112 Posts
Anyone tried that dura seal head gasket sealer?
My mechanic told me about duraseal head gasket repair sealer last year when my daughters v8 chevy truck was overheating and blowing white smoke. He wanted to pull the heads but I didn't want to drop 2200 bucks on new gaskets since the truck had over 180,000 miles on it. I called duraseal and spoke with them and they sent me out the sealer kit for that particular engine.

Took only about an hour to get the smoke and overheating to stop once I added the duraseal to the coolant system. Bottom line is IT WORKED!!! My daughter is still driving the truck back and forth to college.
dailydriver72

Join Date: Dec 2013
Location: ALBANY,
New York
Post: 92
Thanks: 2
Thanked: 28 Times in 76 Posts
Anyone tried that dura seal head gasket sealer?
I found that a lot of the people I talk to, think those types of sealers are bad for your engine. But they don't understand that only the water glass types are bad for your engine and can clog things up. If you do your research you'll find that dura seal head gasket sealer doesn't use water glass in their sealer. I think they are the only ones out there who don't use that water glass silicate stuff.

Their sealer is supposed to be a polymer based and is temperature specific. Meaning it is made to cure at the higher temps of the head area only, not the radiator or block temps so theres no chance of it curing anywhere but the head area.
mechanic101

Join Date: May 2008
Location: AUSTIN,
Texas
Post: 1752
Thanks: 134
Thanked: 838 Times in 1126 Posts
I've been a mechanic for over 22 years and tried every water glass based silicate sealer out there from steel seal to bars and from blue devil to Thremagazket. All those sealers are water glass based silicate sealers and wont work on newer engines with aluminum heads or blocks. If you have an older engine with steel heads and steel engine block a water glass based sealer might actually work for you, at least for a little while. The reason for this is simple, steel docent expand and contract more than about 8% so water glass sealers can cope with that movement for a few weeks maybe even few few months. Aluminum on the other hand expands and contracts about 33% more than steel and simply cracks water glass sealers right-off almost immediately! I've used duraseal many times for my customers.

Duraseal is not a water glass based sealer! Its a polymer which means it never turns to glass like the other sealers like steel seal, bars, blue devil, white shepherd, crc, nanotechnology, thremogasket or heal-a-seal. Since dura seal stays flexible it can handle the expansion and contraction of aluminum components like cylinder heads and engine blocks for about 4 years before it begins to let go. Your cadillac northstar engine has aluminum heads and aluminum engine block so its really important you use a dura seal product not a water glass sealer. Any 1998 or newer vehicle will have aluminum heads now days and many also have aluminum engine blocks as well like bmws, mercedes, audi, newer vortec engines etc...


dennysmustang988

Join Date: July 2014
Location: ATLANTA,
Georgia
Post: 67
Thanks: 18
Thanked: 17 Times in 46 Posts
Anyone tried that dura seal head gasket sealer?
I used it dura seal and it worked for me! My mustang v6 with aluminum heads and steel engine block was leaking water outside between the head and block and building a lot of pressure i mean the hoses were rock-hard. Duraseal was kinda expensive so I tried blue devil first and spent a few hours using that blue devil garbage and it did nothing. Called steel seal and spent over a hundred bucks on their stuff and it sucked too! all the steel seal did was clog my heater core.

Finally I called dura seal and ordered it, it cost more than the other two but man, what a difference! The water leak actually stopped in about 20 minutes and the pressure went back to normal in about an hour. Great stuff...

Anyone tried that dura seal head gasket sealer?
dennysmustang988

Join Date: July 2014
Location: ATLANTA,
Georgia
Post: 67
Thanks: 18
Thanked: 17 Times in 46 Posts
Anyone tried that dura seal head gasket sealer?
mustangman72

Join Date: July 2013
Location: ATLANTA,
Georgia
Post: 192
Thanks: 12
Thanked: 38 Times in 52 Posts
Anyone tried that dura seal head gasket sealer?
My LT1 engine in my vette was missing pretty bad at start-up and would actually push water right out of the over flow tank. My mechanic said the head gasket was cracked and coolant was spraying my spark plug. I used the dura seal head gasket sealer and it got a lot better stopping the misfire but the pressure was still to high. Called dura seal back and they sent out another application to me. The second application was free and covered under warranty but shipping and handling came to around 20 bucks. During the second application I kept it in the engine for 3 days and finally it worked completely for me. I guess the trick was to leave it in for a longer period of time. I'd recommend the dura seal.

bobbysvette1997

Join Date: Jan 2011
Location: TRENTON,
New Jersey
Post: 62
Thanks: 7
Thanked: 11 Times in 28 Posts
Anyone tried that dura seal head gasket sealer?
I have a 94 Toyota Supra twin turbo with 675+ HP! Developed steam form exhaust and a overheat condition when cruising at 70 mph or more. Mechanic said it would be $6500 to replace head gaskets another wanted $5800 bucks. Called dura seal and told them about the problem and that my engine is a built twin turbo with 675+ horse power. They said no problem, the dura seal will hold even with my higher HP's. They said their sealer is flexible so it shouldn't crack-off when I push the engine. Well they were right its been almost 2 years and the dura seal is still holding!!!

major-hp-4-me

Join Date: Sept 2012
Location:         MIAMI,
Florida
Post: 12
Thanks: 3
Thanked: 1 Times in 1 Posts
Anyone tried that dura seal head gasket sealer?
I heard dura seal is the best head gasket sealer out there and that's coming from a few mechanics I know! But I never used their head gasket sealer but I did use their hi-strength oil stop leak in my 2007 gmc equinox and its awesome! I tried lucas first and it didn't even slow down. Then I got that dura seal oil stop leak and in about 75 miles it completely stopped my leak. Great product but not cheap thank goodness you don't have to do it with every oil change...

gottago1277

Join Date: Aug 2013
Location:         SAN JOSE,
California
Post: 2
Thanks: 0
Thanked: 0 Times in 2 Posts
Anyone tried that dura seal head gasket sealer?
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