ATP Automotive AT-205 Re-Seal Stops Leaks, 8 Ounce Bottle

I have to say that it is very rare I would ever use or recommend anything from the "snake oil" section of an auto parts storeThis AT-205 I had researched and felt as comfortable as one can be using any additive.I had purchased a 2006 Ford Explorer with a very minor leak at the rear main seal. I am sure starting with a very minor leak helped to.The vehicle literally looked brand new. It looked like the leather seats had never been used. There was not a single mark on the paint. The motor and transmission worked flawlessly. The only thing I intended to do is replace the plugs with high end Iridiums, the old ones were worn but nothing about their condition otherwise.Its a big job to replace the rear main seal so I decided to give this a try along with a high end oil and filter change then another after a short time to help remove some of the sludge.I added a bottle of this with the second oil change and obviously the seal swelled as intended and there was no more leak.I had a motor that had been well maintained and a very minor leak. Had the leak been worse I suspect this would not have worked as well, fix things fast before they get worse and more expensive.But I was fortunate and this additive was a legitimate product and did what it was designed to do.There is no question this worked in my case and saved me big money if I had needed to replace that sealIf your leak is minor then I have to recommend giving this a try. It is one of the rare items that actually worked as intended.I am very happy with the results.I have watched how spraying this on rubber suspension parts extends their life as they do dry out. Not a bad idea and perhaps save some big amounts of cash.

I’ve used this on a 2003 Toyota Camry that was leaking so bad from the rear main seal and valve cover that it was dripping all over the driveway and it completely stop all the leaks after about 2,000 miles. I’ve also used this product on a 2011 Honda crv that was leaking from 4 places (VTEC solenoid, oil control sensor, rear main seal, and crankshaft seal) so bad that it was spraying the whole underside of the car with oil. it was leaking up to a quart of oil between oil changes. It also worked a miracle on the Honda as it now does not use any oil between oil changes. This product potentially saved me thousands in repairs for two cars that have well over 200,000 miles on them and never once damaged anything in the engines of either car. I just follow the instructions and put some in each time I change the oil.

2003 G35 Sedan 150k miles rear main seal small leak 1 or 2 quarter size drops a day, passenger side valve cover gasket leak small nickel size drop per day. Was skeptical but after reading several reviews and watching independent test videos i thought why not give it a shot the alternative was $2k in shop repairs. Almost unbelievable but after receiving the product poured it in and ran a few errands maybe 1 hr of driving or about 25 city miles and not 1 drop. Checked again next day nothing not a single drop on the drip pan i had been placing under the car for months.

Stopped and slowed a couple of weeping seals that were leaking motor oil on a V8 with 210,000 miles. It takes a couple of week before you notice the leaks have stopped but it definitely is worth a try before spending $3000 for a partial teardown of your engine.DO NOT use in your transmission, transfer case, power steering, or any other system. USE ONLY for MOTOR OIL in your engine.

I can’t say enough good things about stop leak. My high-mileage car had a persistent oil leak coming from the engine, and I was looking at a pricey repair job. After some research, I decided to give this product a try as a temporary fix—and it worked better than I expected.I followed the instructions and poured it directly into the engine oil. Within just a couple of days, the leak slowed down dramatically, and by the end of the week, it had virtually stopped. I’ve now driven over 1,000 miles without a single drop on the driveway!What impressed me most is that it didn’t just mask the problem—it actually reconditioned the seals and helped reduce engine noise too. It’s a great solution if you're dealing with an aging engine and want to avoid an immediate, expensive trip to the mechanic.For the price and ease of use,it is absolutely worth it. Just make sure to use it exactly as directed and give it a little time to work. Highly recommended for minor to moderate engine oil leaks!

This product works! However it only works on seals that are leaking because the rubber has hardened. AT-205 is a plasticizer, it restores flexibility to rubber, this is not like other products that cause rubber to swell. If you have a leaking oil seal give this a try.

Don't know if I can blame this product or not but it did not help my tractor stop leaking engine oil from the clutch housing

This is THE go-to for leaks. Be aware though that this only works on seals and gaskets. If you have some sort of RTV that is leaking, this won't do it.