







🛠️ Fix leaks like a pro—because your engine deserves the best!
BlueDevil Oil Stop Leak is a powerful, easy-to-use formula designed to permanently seal oil leaks and restore rubber seals in any fluid oil system. Compatible with both gasoline and diesel engines, it prevents clogging and protects engine health, making it a trusted choice for over 3,200 satisfied customers.






| ASIN | B000OAEN7C |
| Best Sellers Rank | 47,213 in Automotive ( See Top 100 in Automotive ) 356 in Fillers, Adhesives & Sealants |
| Brand | BlueDevil Products |
| Customer Reviews | 4.2 4.2 out of 5 stars (3,207) |
| Date First Available | 12 Mar. 2007 |
| Item Weight | 136 g |
| Item model number | 49499 |
| Manufacturer | BlueDevil Products |
| Manufacturer part number | 49499 |
| Model | 49499 |
| Product Dimensions | 15.24 x 7.87 x 2.54 cm; 136.08 g |
| Viscosity | 08 Ounce |
L**M
What can I say from a weep to no weep
Worked shocked seal was weeping on a timing chain cover stuck it in and bang no not the engine and the weep had gone
J**O
it dose work on slight oil leaks.
Had slight oil drip off head gasket. now just a damp pach (no drip) passed it mot with no Advisory.
B**G
wast of money
paid for something that was meant to cure a small leak on a rocker cover gasket did not work wast of money
A**Y
Thank You
Marvellous
S**N
Five Stars
does what it says on the tin
P**E
shocked it worked
my head was leaking oil into the coolant/radiator , and overflow bottle , it was full of it , i drained the radiator, plug at bottom realised the rad was saturated with oil as i could not fill it up , i changed the rad , easy job, i have no experience, did as it said on my 2007 civic ,i was shocked but it really worked, my wife has a client he said his car has done 20k since and still going, you must clean out rad and use a flush for coolant system ,it goes in the rad , gl
A**R
Didn’t work
Didn’t work, this was an expensive project, I should have put the money towards getting the leak fixed (which I done) rather than waste money on this product that failed to deliver.
A**.
Leak stoper
Tried this product . Didn't realy stop my leak
C**O
Excelente sellador de fugas de aceite, lo envié a 2 talleres no encontraron la fuga y lo probé y al momento se detuvo la fuga, seguí las instrucciones estoy feliz me ahorre un buen dinero.
S**B
I've had a very slow drip in my vehicle for over 10 years. I was told that it was a timing cover leak and the estimate when originally diagnosed was approximately $3500. The extent of the leak is one drip per day and I did not think that it was worth proceeding with the expensive repair job. It does not amount to more than a cup of oil leaked between oil changes but it is enough to leave a stain in my garage and parking stall at work. I've kept a very close eye on my oil levels and have tried a variety of products over the years intended to stop leaks. I park over a piece of cardboard in my garage so I can monitor the leak. When my oil level had dropped below the FULL line, I added the entire bottle of Blue Devil and drove my vehicle for approximately two hours. I have parked in my garage for the last week and there are no drips on the cardboard. This product has worked for my vehicle.
C**A
Added this to my car that had oil leak and it worked for a few weeks but then started leaking again . Did not fix problem it may have slightly improved but leak is still there . I was septic from start but gave it a try .
A**K
The product worked as advertised
C**A
El productor no ha hecho que deje de perdre o quemar aceite. Que posiblemente ese sea el problema que si quema aceite nonlonsoluciona. Alguien me lo puede aclarar? Y que solucion hay? Gracias.
Trustpilot
3 weeks ago
1 day ago