Your cart is empty.
Your cart is empty.BlueDevil Transmission Sealer permanently seals fluid leaks in your transmission, guaranteed. It restores gaskets and seals transmission leaks fast.
David
Reviewed in the United States on February 19, 2025
Transmission started leaking about 2 weeks ago. Wife called me and said there is oil on the garage floor after Ieft. Cleaned it up. The next morning there was oil on the floor again. After investigating I realized it was transmission fluid. Went to Amazon to see if there was anything available to stop the leak. There was several options, seemed like the Blue Devil had the best reviews so I ordered. Took a few days to get it. By the time I got it car was leaking a lot. My car holds 12 quarts of fluid so per recommendation I put 12 oz of Blue Devil in. I then topped of the transmission with 5 quarts of Transmission fluid. So in 2 weeks I had lost about 6 quarts of fluid, so quite the leak. Had my doubts but after driving several hundred miles it looks like the leak has completely stopped. Now if it holds up I will be amazed.
comarine1371
Reviewed in the United States on September 25, 2024
My 1986 Suburban had a bad drip from the transmission, I'd lose about a quart every 200 miles. It was likely the front seal which a shop quoted me over $1000 to replace so figured I'd give this stuff a try and it actually worked! Put a piece of cardboard under my truck and after two weeks there's only three drops when befo addedre the cardboard would've had a large spot. I warmed my truck up, shut it off, added the whole bottle and drove 100 miles to go camping. The next day, drove 100 miles home and the leak has slowed to almost nothing!
Brett Sparrow
Reviewed in the United States on September 12, 2024
1996 Buick century had a good size leak due to my transmission side pan gasket which was wore from age. Added some of this and no more leak. Worked great andI highly recommend
MikeD
Reviewed in the United States on August 11, 2024
While it's been less than a week since added to leaky 30 yo trans, no sign of leakage yet.
Customer
Reviewed in the United States on April 5, 2024
Had transmission leak after I took my 1974 Corvette Stingray on a trip for Easter Sunday. Was quiet a bit of fluid on the driveway. I added 3 ounces of this product, drove the car about 100 miles and there is not 1 single drip on the driveway after several trips. Highly recommend!
J. Woods
Reviewed in the United States on November 2, 2023
I used exactly 2 ounces and put it in my leaking Ford F-150 5 Speed Mazda transmission. It was leaking out of the 3 plugs on top of the transmission. I didn't want to take out the seat, pull back the carpet, remove the tunnel, then remove the top of the transmission to put in new plugs this close to deer season, so I decided to give BlueDevil a try. After a couple days THE LEAK STOPPED!!! No more drips!! The transmission sounds the same, shifts the same and works the same, other that it stopping the leak that is. I recommend BlueDevil Products 00236 Transmission Sealer.
Offgrid2010
Reviewed in the United States on February 15, 2021
On opening i discovered the cap was not tight and had a very small leak. But not enough to worry about. It was not wet on the outside of the box. A little bit inside.
kmcshane
Reviewed in the United States on December 25, 2021
I had a smallish trans drip after driving, and thought I try this in my Ford F-350 diesel manual. I followed the recommended amount. No noticeable difference. I added some more after a week: no difference. So can't recommend this product.
Brian Lewis
Reviewed in the United Kingdom on October 20, 2021
The sealer stop the leak for a short while but like it says on the bottle it cannot fix a Mechanical fault. It turned out the bolts on the gearbox had gone loose because the rubber gasket had shrunk with age. Had the gasket replace along with a new filter and all ok now. The jeep is 23 years old though.
Rick zimmer
Reviewed in Canada on March 2, 2019
03 taurus transmission was leaking bad from torque converter seal put in 8 oz and leak stopped after 2-3 days of driving not sure how long it will last but very happy
NED
Reviewed in Canada on March 10, 2019
It was the best product, worked great no more leaks
Customer
Reviewed in Canada on December 28, 2016
I had a bad transmission leak on my forklift. I had to drive it every day, for a week. It worked!!!!
Holly
Reviewed in the United Kingdom on July 31, 2014
my sons' car had a major gearbox leak..a few days after using this it seems to have stopped leaking completely.
Recommended Products
$14.76
$ 6 .99 $6.99
$182.76
$ 84 .99 $84.99
$56.07
$ 25 .99 $25.99