BlueDevil Products BlueDevil Oil Stop Leak by

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

Had slight oil drip off head gasket. now just a damp pach (no drip) passed it mot with no Advisory.

paid for something that was meant to cure a small leak on a rocker cover gasket did not work wast of money

Marvellous

does what it says on the tin

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

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.

Tried this product . Didn't realy stop my leak

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

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!