BlueDevil Products49499 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 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.

Pretty much same review as I gave their trans. stop leak. Less than a week and 30 yo 4.3 V6 with worn out oil pan gaskets (gotta pull engine to replace) seems to no longer leak. Fingers crossed!

Tenía una pequeña fuga de aceite en mi carro y sinceramente pensé que este producto no haría mucha diferencia… pero me sorprendió. Seguí las instrucciones al pie de la letra y en un par de días la mancha en el piso desapareció por completo. No tuve que gastar en una reparación costosa, y eso para mí ya es un gran alivio. El motor sigue funcionando perfecto y no he notado ningún efecto negativo.

We had a valve cover gasket leak on our 2002 Lexus RX300 and tried this product. Followed the instructions to the letter. We had a bad experience with this product. It didn't seal the valve cover gasket leak at all and unfortunately started to cause a lot of smoke to come out the exhaust. The engine light came on the very day we put the product in and it still comes on for a week after. We ran the engine for over 100 miles like the instructions state but after 10 days went by with only more problems, we took it in for service to get the valve cover gasket replaced. I would not recommend this product based on our experience. Even after the gasket replacement repair and another new oil change, the oil light still comes on intermittently. This never happened before using this product. Our Lexus Rx has been a very reliable car for 15 years. It was running fine before using this product and only dropped one drop of oil per day on the garage floor due to the slow valve cover gasket leak. I wish I would have just let it leak a little rather than use this product. This is one of those too good to be true to be believable products in my opinion.

Doesn’t Stop Leak

I have used this several times for front area crank leeks never noticed any poor results and it seems to last.

Supposed to reduce small oil leaks. Would need to add to each oil change for best effect.