Review on Bar'S Leaks High Mileage Engine Repair, 16.9 Oz by Dan Olsen

Used this product on a Honda Accord 1999 EX 4cyl. Car was leaking oil. I had to refill a quart every 2-3 weeks. Mechanic informed me the car was leaking in numerous spots but the biggest area of concern was the rear main seal.I tried some Lucas Oil 10278 stop leak but it made zero difference after 3 weeks. Before deciding to pay my mechanic around $1200 (my car is only worth $2000!) for all the seals and gasket repairs, I used this Bar's Leaks 1000 engine repair. Poured the entire content in the crankcase before heading out on a fairly long trip. I was honestly surprised it worked within a week. I was expecting it to at least just slow the leak down but the leak has stopped completely and I haven't had to pour in oil nor have I seen any drips. When doing an oil change I found the underside of my car completely dry.I'll update this review as time goes on to inform how well it holds up.EDIT 3/19/2015The leak has returned but it is much smaller than the initial leak before any Bar's Leak engine repair was added. I decided to give it one more try. I bought another bottle of the product and poured it in. It has been 3 weeks now and the leak is gone once again.So far in my case the product can be deemed as just a temporary solution. Some reviews here have claimed that two bottles will do the trick so I am holding on to that shred of hope that this second bottle will permanently seal the leaks. I would still recommend the product for the price alone.EDIT 8/20/2015No leaks as of today! Seems like the second bottle did the trick.Final Edit 11/23/2015After virtually a year of no oil leaks, this product held up for my 99 Accord.However, last month I tried the product on a friend's 97 Accord, with a minor rear main seal leak and it did not work at all. I also used it on my brother's 95 Corolla also with a rear main seal leak to no avail. I tried two bottles (not all at once) for each of the car and saw no difference. Maybe it was because my car's leak was new when I applied the product whereas the other two cars have had their leak for a long time.I would still recommend this product. I am not saying it will work for all applications but it is worth a try. Best of luck to you and I hope you found this review a little helpful.