From the manufacturer
AT-205 Re-Seal – How it works
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AT-205 added to leaking systemAT-205 Re-Seal is added to any leaking engine, transmission, power steering system, differential or hydraulic system (except for brakes) to condition rubber seals/gaskets and stop leaks. Simply pour it in as you would be filling it with oil or fluid. | The formulation blends with the oilThe additive blends with oil in the system and is circulated throughout during operation, treating and conditioning rubber seals and gaskets. | Conditions and rejuvenates sealsAT-205 is a plasticizer, a type of chemical used in rubber manufacturing to set hardness and flexibility. As a seal or gasket gets older it can dry out, harden and wear – treating it with AT-205 will rejuvenate it, restoring it’s flexibility and sealing properties. | Most leaks resealed within 5 hoursAs long as the seal or gasket is not severely damaged or torn, the leak is resealed after a total of 5 hours of driving – saving time and money from costly repairs. |
Jason W –
Have a 2013 Honda Pilot with a seal leak so bad that it spayed up onto my alternator and killed it. Also had a small puddle under my vehicle (a few drops) every day. Scotty Kilmer recommended this. Thought it was a bit expensive but not anymore. Fixed the seals and no more leaks!!! Does not fix gasket leaks but if it is a seal leak, it is well worth the investment! So flipping happy!
Anonymous –
I had a slight oil drip at 230K miles on 99 Suburban. There were about 3 months until my regular oil change interval when I put this stuff in (I didn’t drain any of the existing oil out nor had it fallen below the recommended level). It did take about 2.5 months or something like 1000 miles of driving but the leak stopped. Now I had the oil changed a few weeks ago, removing all of this product from the system and still it’s not leaking. Worth trying and seems to be a very useful product. Don’t expect it to necessarily work right away though, for me it took some time.
Daniel Castro –
Product seems to be very good and cured a leak I had
TBo –
I found out about this product from a YouTube video about automotive hose repairs. It’s not advertised for this, but it works very well for restoring dried out rubber hoses and other rubber items. I recently used it to renew the dried out valve on a basketball that was leaking. It fixed it immediately. I’ve also used it to restore a spare tire that was dried out. It has amazing restorative effects on dried out rubber.
A. Scott –
I had previously used this on a 91 miata engine that was starting to leak after 250,000 miles and it sealed everything within a week or so.I would thereafter alternate a maintenance dose of ATP 205 and Liqui Moly Oil Saver at each oil change, so I wasn’t sure which one did the trick (turns out both are neck to neck).8,000 miles into my recent rebuilt engine, I noticed it began a slight drip from either the front main seal or the cam seals and for good measure, my power steering unit because why not.. This time I tried Bar’s Main Seal leak and it didn’t do much at all for the leaks.I added ATP 205 to both the crankcase and the power steering fluid and both stopped leaking completely within no more than 2-3 days of driving. Couldn’t be happier.This is not snake oil and it works as advertised. I have now seen these results on two different builds including one power steering unit. I plan to add a little to my diff and trans just to keep things fresh and tight.
Hookah B –
This stuff is amazing!!…It was kinda pricey for such a small bottle, but worth every dime..My 2007 Hummer Transmission was leaking out BIG TIME, puddle on the garage floor every morning..We poured this stuff into the transmission and within about 3 days or so of driving the leak is gone, and it was a bad leak…Im amazed how well it worked..
indyman777 –
I had a 2013 Volkswagon Beetle that developed an oil leak. After doing some research, it was clear that I needed to try this product out. After driving it around for a few hours over a period of a couple of weeks, the leak completely disappeared.My daughter has since wrecked the vehicle, and we purchased another Beetle which is a year older. For preventative maintenance, I am adding to her oil before the vehicle has a chance to develop any leaks. This will be a regular additive for all of my vehicles.
Dona –
I have an older high mileage 4.3 Chevy engine, 243000 miles and more than one oil leak down below. Put this in not expecting a lot but too my surprise after driving for awhile which is recommended it started to dry up. One large leak to go and it is nearly nothing now. I believe the recommendation is 5hr drive time or 500 miles. I have not reached either yet but close. SO , I say this stuff works and will continue to use at each oil change, also recommended.
Amazon Customer –
My Acura MDX was smoking like a chimney on start-up and would disappear after like 3-4 seconds. So i was thinking i needed to change out my valve seals. I decided to try this out before forking up the big bucks and it worked! Changed my oil, put some ATP AT-205 re-seal stop leak and it made my smoke issue go away. Good Stuff!
Courtney Crawford –
When I first read about this stuff, I was I heard the same thing about Lucus and some other products. Well my niece 2000 Honda civic kept leaking oil. I took it to a shop they told they put some Lucus oil treatment in it and it should help. But if not bring it back. Well it didn’t help at all. The car would leak. I had the car back at the shop to fix the AC and I told them it still had a leak. Well they told me it may need to get the seal replace and I was like why didn’t you mentioned that the first time. So, I did a little research and came upon this stuff. I changes my nice oil and added this bottle first. Then I drove the car for a few miles. Well I told my wife to drive to work a few days. So when I rechecked to see if there any leaks, there wasn’t any. Knock on wood, if I had know about this stuff before it would’ve save me a some money. I’ll update over the next few weeks. So far so good!