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

Okay, where do we begin. I bought my vehicle from a dealer who bought it from an insurance lot. Something has fallen onto the vehicle and crashed the hood and the surrounding areas. But the engine bay was untouched. The vehicle sat at the insurance lot for about 6 months without being started. Once the dealer purchased it he took it to a body shop where they fixed all the body panels the hood etc. Then when they try to sell the vehicle they had a hard time selling it because it was a six-speed manual transmission. So it's sad at the dealership for another 4 months. Now all this sitting and not running caused the rear main seal to dry out. After I purchased the vehicle about 3 months into driving a substantial leak happened at the rear main seal where I was losing about half a quart of oil a week. Took it to the dealership the estimate to fix it was around $3,800. Called a independent mechanic it was about 2800 to $3,000 to fix it. I just did not have that amount of money to throw at it. So I started searching online and stumbled upon AT205. Now before I purchased this product I did my due diligence did the research watched the video of the manufacturer. Educated myself and how is this product different from any other stop leak product. And where I was sold was that this product did not swell the seals but what it did was or what it does is it rejuvenates and restores the elasticity and the plasticity of the seals due to the plasticizers and plastic stabilizers that this product contains. So I bought it. The product arrived quickly, and as quickly as it did arrive I poured it into my engine. I mean what's the worst that can happen, it doesn't work right. I followed the instructions drove the car around for about 30 minutes to let everything mix in. And then it was time to drive and get about 5 hours of driving time. It took about 5 days of commuting back and forth to work to get those 5 hours in. After about 3 hours I noticed when I would stop at a parking spot for extended period of time and I would move my vehicle instead of having 10 drops of oil under the engine I would have three or four. After about 5 to 7 hours of driving The only oil left was the residual oil on the bottom of the engine that I have not wiped off yet because a car is too low to the ground. It's been about 2 weeks now and I have zero drips of oil under my car. Fresh oil that is. At my house in the driveway I still do have the oil spots from the leak that were there before I use this product. As of now there are dried out and everyday I check for new spots and I see any. I'm highly satisfied with this product and what it has done thus far. How is it going to work in the future I don't know. Will the oil leak come back with my next oil change not sure. But what I do know as of right now there's no leak. I'm thinking about buying another bottle and add it with my next oil change just to be sure that those seals get the love that they need to be able to seal the engine properly for a long time to come. One thing I'm going to do is, I will update this review a year from today. If you have a car that has a front main or rear main seal leak or any other leak when your engine try this product out it might just save you hundreds of dollars that you may or may not have. Yes I highly recommend this product to anybody that has a engine leak.

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 store This 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 too. 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 seal If 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 have a fairly mint 2006 BMW 530. I've spent the last year or so trying to restore it to top performance and fuel economy by refreshing the fuel system and sealing any and every last gap. I replaced all the related consumable parts like the oil fill cap (the gasket was super flat), the gas cap, manifold gaskets, fuel filter, O2 sensors, plugs etc. The changes were noticeable at every step. But when I was sure I was finally done, I checked the long term fuel trims and did a smoke test. And wouldn't you know the LTFTs were at like 15% and smoke was coming out of the valve head cover on all sides. I replaced the valve cover gasket maybe 3 years ago figured it was good, but just dry-shrunk. So this seemed like the perfect time to try AT-205 having heard rave reviews about it. I added about 1 oz for every quart of fuel and immediately ran out for a few errands to give it a chance to mix well. It was that easy. And wouldn't you know its just 3 days later and the LTFTs are now steady between 0-2% and I'm not seeing any smoke even when I crank my machine up to 25psi. You can (not) hear and feel it in the idle of the car too. You have to be standing right next to it to even hear that its running or check the dash if your in the car. ATP was the magic sauce that got me to a perfectly sealed, optimally efficient drive. I CAN believe that such a simple product can deliver such measurable results so easily, because literally everybody who knows says so. But its still amazing to realize the results for yourself. If you even think you have dry rubber or leaky gaskets, it seems like it will pay for itself in fuel economy alone in short order. Don't even hesitate. This stuff is liquid gold.

First off the label says it it non-toxic, which is kinda strange considering that it also says not to allow it to contact skin, eyes, painted surfaces and brake systems. I guess what they mean is that it can cause serious injury but wont kill you. Anyway the good stuff: Claims to work on: Engine leaks Transmission leaks Power steering leaks Rack and pinion leaks & any other fluid system Exception: do not use in brake systems. Pros: Does not appear to mush out (over-soften) rubber seals/rings when used full strength (undiluted). Seals seem to retain their elasticity and tensile strength (great). Not much odor, clear and easy to handle. Cheap for what it claims it does. Cons: Tiny bottle 8 oz. Observations: So far, I have not yet seen where the rubber seals/rings increase in size (expand) when soaked overnight at full strength (this was a bit odd). Cheap enough to be used for testing purposes. Based on limited testing I can only say that it seems that it would only seal very tiny leaks, since the rubber seals dont appear to swell (within human perception). I will update when further info becomes available (shortly). I am currently testing on a few items: transmission dipstick seal, civic top cover bolt seals, AC coupler o-ring, distributor seal, suspension bushing (front and back), radiator cap seal (watching this one closely). I will also change the rating - i hope it will do well. Update on Nov 10, 2012 Transmission dipstick seal - works great, its now firmly in place - was very loose before using. Engine Oil dipstick seal - works great, its now super firm in place Note: Both dipstick seals took a whole week to swell and notice the difference. Civic top cover bolt seals - just applied some today, have to wait on results. AC coupler o-ring - no visible signs yet. Will have to use on live AC system to test. Windshield wiper rubber - Not recommended, rubber becomes too sticky and uneven - does not clean debris well after use. Update to Jan 26, 2013: Used it to stop a small power steering. It did make some difference to slow the leak even more. It did not stop the top cover bolt leak, nor the small transmission & engine leak (Only used a little in all three). Radiator cap seems marginally more prone to leaking after the fact. So I guess this product works best under certain "ideal" conditions. I would still buy it for specialist applications due to its cheap cost.

I used this on a 2004 Yukon XL 2500 with the 8.1-liter engine, 198,000 miles. I drained the old oil, added the product to the new oil first, shook up the oil jug to mix it well and put it in the engine. The leak was small, between the engine and transmission. I did 5 hours of driving and the leak is gone. I am now going to order more for my rear differential to see if the pinion seal will stop leaking.

WOW!! ABSOLUTELY AMAZING!! I never write reviews but felt I needed to for this product. For years I've had oil leaks in my 2005 GMC truck and tried multiple products to try to stop it to no avail. It's gotten to the point where I had 3 or 4 different leaks in various areas. I would park at a store for 10 minutes and come out with several oil droplets on the ground. It was embarrassing. Mechanic said in the areas it was would be very expensive to repair. Tried this product with lil expectations cause nothing else worked. The result was simply amazing!! Zero and I mean zero leaks after using this product!! I can't believe it!! Now if it lasts is the next question but couldn't be happier at this point. Great product!!

This stuff isn't just for internal leaks. I had a fuel injector cushion (large o-ring) that was leaking vacuum and causing a cylinder misfire. Since no fuel was spraying out and this was on a $700 beater, I decided to put a few drops of Re-Seal on it. It revived the rubber and swelled the cushion enough to stop the vacuum leak.

I just measured exactly 6 oz to put in my Honda Pilot which holds 4.5 quarts of oil and there was only 1 oz left in the bottle. It does not have a total of eight fluid ounces at least not in my case. If you get a bottle please measure and let us know. I just put it in so no info on stopping leaks.