BlueDevil Products 49499 Oil Stop Leak - 8 Ounce

2012 Ford Focus SE 230,000 miles, Had a timing cover oil leak, which was pretty bad in December 2019. Each time i parked oil would drip onto my driveway and obviously had to top up constantly. Had a quote from 2 shops to have it repaired and was told timing cover, valve cover and sump pan had to be removed to replace the front end crank oil seal. Cost would be $1300.00. Was about to have it done, but then decided to do some research on oil leak repairs. Came across the Blue Devil product and based on the reviews decided to give it a shot. Purchased the first bottle as a trial and added it last week of December 2019. Drove about 400 miles all at once. and the leak reduced significantly, but not completely. Drove another 2000 miles and further reduction, but there was still a mild leak. About mid Feb 2020, called customer service at Blue Devil to discuss suggestions. Representative was extremely cordial and helpful, immediately recommended a second bottle which BD would supply free of charge as long as i had the original receipt emailed to them. Sure enough 3 days later, a free replacement bottle arrived and was poured in. Drove daily long distance from then on and the leak reduced further. After about another 5000 miles, early March, the leak completely stopped. Driven another 8000 miles since then and still no oil leak. Needless to say, more than pleased with the product and exceptional results. Repair would have cost $1300.00, 1st bottle of blue Devil cost $21.00 and second , free!. Another take away is that it requires run time (miles) to get the product to work at its best. Be patient, it works. 100% satisfied!

I recently added the Blue Devil Stop oil Leak in my 2015 S550, and I couldn't be more impressed! After noticing some oil leaks, I was skeptical about how effective a product could be. However, after using this additive, the leaks have completely stopped. The application was straightforward, and I appreciated the clear instructions. Since adding it to my oil, I've seen a significant improvement in performance as well. Not only has it resolved my leak issue, but it also seems to have enhanced the overall engine smoothness. I highly recommend Blue Devil Stop oil Leak to anyone facing similar issues. It’s a reliable solution that truly delivered on its promises!

Worked

I have a rear main seal leak in my '06 Honda Ridgeline. It started about 15K miles ago roughly. I put in the Blue Devil Rear Main sealant first and it worked for a while. It went from about 10 drops a night to a couple. then completely stopped for a while. After a period of time (not sure exactly since I stopped checking assuming this might be a permanent fix) I noticed the leak had returned. Upon my next oil change I moved to this product, which according to sources is a stronger stop leak. This works better but the leak did return eventually. On my 2nd bottle of this product, I changed my oil early (for a different reason) during the period of time when the leak had stopped...so I added a 3rd bottle to fresh oil at a point where the leak was stopped. For clarification, except for the first bottle of the rear main seal stop leak, my practice has been to add one bottle when changing oil. Hopefully, I can get ahead of the issue with fresh Blue Devil on an already stopped leak? Dunno---not holding my breath. It works good enough that I would recommend it. It seems effective if you have leaky seals, but I am not sure it is a permanent remedy.

Second bottle in Mar, 2022 review: After driving about 500 miles, the leaking was still pretty bad. I called the company to see if I can a second bottle. They said yes. Tried second bottle. After driving about a week, I checked the oil level. It was going down. And the leaking was getting worse. I have to add some engine oil to top it up because it is half low. I will drive a few months and may try a third bottle. Or I need to replace the engine seals. - First bottle in Feb, 2022 review: I did a lot of research before I bought it. And I did expect it to seal the oil leak in my engine. The leak was because of the front valve cover gasket. I can see the oil coming out there. I thought it would work. But it didn't. After a week of driving, the engine is still leaking oil. Not sure what I should do. But I will return the empty bottle to get my money back. Should I try a second bottle after driving a few weeks?

The leak was a rear main seal on a Dodge Hemi. I used the stop leak and it did slow it down a bit but within 50 - 75 miles I replaced the seal. I really didn't give it time to work.

So far so good Car not leaking

Did not work. Total waste of Money Update It does work UPDATE 1/16/2017 About a week ago I gave this product a bad review. I had followed the instructions. It took longer then expected to seal the leak so I am eating my words and now reporting it works. Not inclined to replace gaskets on a car that is at almost 200000 miles. My plan is now is to add 2 oz of Blue devil at each oil change So I will need to purchase another bottle before my next oil change. It took about 1 week to stop leaking oil. So give it some time. Update 2/13/2017 Still no leak and am very pleased with it. Update 2/27/2017 My wife drive this car for short distance 10 Minute trips for the most part. It started leaking a little bit. I believe every so often at least every 3 or 4 weeks needs a 30 minute drive. Since I drove it more over the weekend it stopped leaking.

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.

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.

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 .

The product worked as advertised

Worked shocked seal was weeping on a timing chain cover stuck it in and bang no not the engine and the weep had gone