---
product_id: 19650885
title: "AT-205 Seal Leak Stopper 8 Ounce - 2 Pack"
brand: "atp automotive"
price: "296 zł"
currency: PLN
in_stock: true
reviews_count: 11
category: "Atp Automotive"
url: https://www.desertcart.pl/products/19650885-at-205-seal-leak-stopper-8-ounce-2-pack
store_origin: PL
region: Poland
---

# Compatible with multiple oil types Fast-acting formula Rejuvenates rubber seals AT-205 Seal Leak Stopper 8 Ounce - 2 Pack

**Brand:** atp automotive
**Price:** 296 zł
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal the deal on leaks before they seal your wallet!

## Quick Answers

- **What is this?** AT-205 Seal Leak Stopper 8 Ounce - 2 Pack by atp automotive
- **How much does it cost?** 296 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/19650885-at-205-seal-leak-stopper-8-ounce-2-pack)

## Best For

- atp automotive enthusiasts

## Why This Product

- Trusted atp automotive brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Extend engine life:** Rejuvenates all rubber seals & gaskets across engines, transmissions, and hydraulic systems.
- • **Seal-safe, no swelling:** No petroleum distillates means no over-swelling or breakdown of your precious seals.
- • **Stop leaks in record time:** Professional strength formula seals leaks quickly to keep your engine running smooth.
- • **Cost-effective maintenance:** Avoid expensive seal replacements and keep your high-mileage vehicle leak-free longer.
- • **Universal oil compatibility:** Works seamlessly with conventional, synthetic oils, ATF, gear, power steering & hydraulic fluids.

## Overview

AT-205 Seal Leak Stopper is a professional-grade, fast-acting liquid additive designed to stop leaks and rejuvenate rubber seals in engines, transmissions, and hydraulic systems. Compatible with a wide range of oils and fluids, it prevents seal swelling and breakdown, extending the life of your vehicle’s seals and saving costly repairs.

## Description

AT-205 Seal Leak Stopper 8 Ounce - 2 Pack: desertcart.com: Industrial & Scientific

Review: It works as claimed on old truck - My daily driver truck is over twenty years old. It has over 180k miles. We take care of each other. I have always attempted to take great care of her and in turn she's still very reliable. In the attempt to keep it running properly I've been adding Seafoam (one ounce SF per quart of oil) to the crankcase about 100-150 miles prior to an oil change to keep the valve train cleaner per advise from some old timers who know how to properly maintain engines. Once the odometer rolls another 100 or so miles I've drained the old oil while it's warm and refill with fresh synthetic high-mileage oil (high-mileage oil supposedly has extra additives to keep seals fresher). The last time I planned on changing my oil I added the 1oz/1qt Seafoam. I then got too busy and did not change it right away. After about 300 miles of driving the truck after adding the Seafoam I noticed an oil leak at the rear main seal area. I immediately suspected that the Seafoam solvent did exactly as it was supposed to do: clean up and dissolve old oil crud and grunge. Some of this crud was probably around the rear main seal area keeping that old seal from leaking. Like many who work on their own vehicles I resorted to YTube to get ideas to remedy the fresh oil leak. After watching many videos (some from seamingly honest mechanics) I ordered the parts needed to replace the failing seal. I also discovered many who claim they have had good success with a seal-refreshioning product called ST-205 made by ATP. I decided to order a couple of bottles of that too. See, the thing about older vehicles is that, in my experience, once a repair requires removing several components to access one that needs repaired or replaced sometimes you end up going all parts-cannon on it. Rather than fixing just the one issue you discover that by simply removing components you end up damaging other seals, gaskets, parts, etc. or things don't seem to go back just right. The temptation then is to open the billfold and attempt to do the "right" thing and replace anything suspect to failure. This is expensive, very expensive. So, I know that my initial reaction to the cost of ST-205 was like, "Woah, this stuff is costly," doing the in-depth seal replacement could be way more ouchy to the balance ledger. So, after receiving the ST-205 miracle juice and the parts to replace the rear main seal I added the recommended seal juice to the crankcase after the oil change. I then drove 150 miles to help a family member out. My truck remained in their driveway for three straight days not being used or started. I was traveling with the family member in their vehicle. Later that week I was about to start the truck and start the 150-mile trip for home. I checked the surface of the driveway under the truck for any oil drips. None. I checked the oil level on the dipstick. Perfect. After a month and a half and about 1400 miles since adding the ST-205 the truck has not leaked oil at all. At 183k miles she does use a little bit but oil is not leaking from the engine. I am happy with the ATP ST-205. It worked as claimed. The new rear main seal parts are now on a shelf in the garage whenever they are needed. If the ST-205 stopped a rear seal leak I can only hope that having it in the old truck is refreshing all the oil seals extending the entire truck's overall dependability. I would definitely recommend this stuff. Thanks ATP for manufacturing a good product as a reasonable price.
Review: I was skeptical about using "snake oil" but it does work - I was never a big believer in using additives as a cure for automotive issues but after some prodding by a friend, gave this a shot and it worked. The vehicle was an older car with over 250K miles on it and it had developed a slow oil leak that I suspected was the rear main seal. While the car ran great, it wasn't worth the what it would have cost me to pull the engine and relace the seal but it was making a mess in the driveway and forcing me to add oil between changes. I added this to my oil per the instructions and the leak stopped. I wasn't holding my breath and would have bet that it would have just leaked out with the oil but I ended up being pleasantly surprised. This time I'm going to use it in my boat. The engine has developed a leak that I think located on the front timing cover. It's a pretty severe leak and I do intend to fix it but for the moment I want to see if this stuff will help slow it down until I can get to it. Additives such as this have limitations to what they can cure and my bet is that this leak is too great for this to stop it but for the price it's worth giving it a shot.

## Features

- Professional strength fast acting resealer, stops leaks fast
- Compatible with conventional and synthetic oils, ATF, gear oil, power steering fluids and hydraulic oil
- Does not contain petroleum distillates, will not over-swell or breakdown seals
- Rejuivinates all rubber seals & gaskets in engines, transmissions, power steering, differentials and hydraulic systems

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B017C5YWNQ |
| Best Sellers Rank | #20,065 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #126 in Industrial Sealants |
| Brand | atp automotive |
| Date First Available | October 29, 2015 |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Weight | 0.01 ounces |
| Item model number | AT-205X2 |
| Material | Rubber |
| Number of Items | 2 |
| Package Dimensions | 8.19 x 6.85 x 1.54 inches |
| UPC | 802280001957 |
| Unit Count | 16.0 Ounce |

## Product Details

- **Brand:** atp automotive
- **Item Form:** Liquid
- **Item Weight:** 0.01 Ounces
- **Material:** Rubber
- **UPC:** 802280001957

## Images

![AT-205 Seal Leak Stopper 8 Ounce - 2 Pack - Image 1](https://m.media-amazon.com/images/I/51i+lK1i0OL.jpg)
![AT-205 Seal Leak Stopper 8 Ounce - 2 Pack - Image 2](https://m.media-amazon.com/images/I/71gJcaUft1L.jpg)

## Questions & Answers

**Q: will at-205 work in bay star hydraulic steering system**
A: It worked great for me on an axel seal but I know poeple that have used it on many hydraulic system and they say it works great unless the seals are torn real bad well than you know what you have to do. P.S. Don't use it on a brake system.

**Q: Will this work on metal gaskets on subaru forester front differential?”**
A: I would advise the owner of the Subaru Forester that he should contact the technical service department for ATP Re-seal Leak Stopper and pose the question to them.

**Q: Have oil leak can't find 2000 Cadillac?**
A: Oil leaks come from many possible places but if one of them is a dry seal it will be worth a try.

**Q: I have a mazda 3s ‘11 with a “dripping” trans from the axle seal. would this at 205 product damage anything if added to the trans fluid?**
A: No, it won't damage your transmission. If in doubt , you can get on you tube trying to search AT 205 and listen to a clip of Scott Kilmer who live in Texas with 51 years experience as mechanic talk about this product .
It did help me to stop oil leakage in my 2004 Toyota Highlander engine with 155,000 miles .

## Customer Reviews

### ⭐⭐⭐⭐⭐ It works as claimed on old truck
*by Z***Y on October 19, 2019*

My daily driver truck is over twenty years old. It has over 180k miles. We take care of each other. I have always attempted to take great care of her and in turn she's still very reliable. In the attempt to keep it running properly I've been adding Seafoam (one ounce SF per quart of oil) to the crankcase about 100-150 miles prior to an oil change to keep the valve train cleaner per advise from some old timers who know how to properly maintain engines. Once the odometer rolls another 100 or so miles I've drained the old oil while it's warm and refill with fresh synthetic high-mileage oil (high-mileage oil supposedly has extra additives to keep seals fresher). The last time I planned on changing my oil I added the 1oz/1qt Seafoam. I then got too busy and did not change it right away. After about 300 miles of driving the truck after adding the Seafoam I noticed an oil leak at the rear main seal area. I immediately suspected that the Seafoam solvent did exactly as it was supposed to do: clean up and dissolve old oil crud and grunge. Some of this crud was probably around the rear main seal area keeping that old seal from leaking. Like many who work on their own vehicles I resorted to YTube to get ideas to remedy the fresh oil leak. After watching many videos (some from seamingly honest mechanics) I ordered the parts needed to replace the failing seal. I also discovered many who claim they have had good success with a seal-refreshioning product called ST-205 made by ATP. I decided to order a couple of bottles of that too. See, the thing about older vehicles is that, in my experience, once a repair requires removing several components to access one that needs repaired or replaced sometimes you end up going all parts-cannon on it. Rather than fixing just the one issue you discover that by simply removing components you end up damaging other seals, gaskets, parts, etc. or things don't seem to go back just right. The temptation then is to open the billfold and attempt to do the "right" thing and replace anything suspect to failure. This is expensive, very expensive. So, I know that my initial reaction to the cost of ST-205 was like, "Woah, this stuff is costly," doing the in-depth seal replacement could be way more ouchy to the balance ledger. So, after receiving the ST-205 miracle juice and the parts to replace the rear main seal I added the recommended seal juice to the crankcase after the oil change. I then drove 150 miles to help a family member out. My truck remained in their driveway for three straight days not being used or started. I was traveling with the family member in their vehicle. Later that week I was about to start the truck and start the 150-mile trip for home. I checked the surface of the driveway under the truck for any oil drips. None. I checked the oil level on the dipstick. Perfect. After a month and a half and about 1400 miles since adding the ST-205 the truck has not leaked oil at all. At 183k miles she does use a little bit but oil is not leaking from the engine. I am happy with the ATP ST-205. It worked as claimed. The new rear main seal parts are now on a shelf in the garage whenever they are needed. If the ST-205 stopped a rear seal leak I can only hope that having it in the old truck is refreshing all the oil seals extending the entire truck's overall dependability. I would definitely recommend this stuff. Thanks ATP for manufacturing a good product as a reasonable price.

### ⭐⭐⭐⭐⭐ I was skeptical about using "snake oil" but it does work
*by R***H on November 14, 2023*

I was never a big believer in using additives as a cure for automotive issues but after some prodding by a friend, gave this a shot and it worked. The vehicle was an older car with over 250K miles on it and it had developed a slow oil leak that I suspected was the rear main seal. While the car ran great, it wasn't worth the what it would have cost me to pull the engine and relace the seal but it was making a mess in the driveway and forcing me to add oil between changes. I added this to my oil per the instructions and the leak stopped. I wasn't holding my breath and would have bet that it would have just leaked out with the oil but I ended up being pleasantly surprised. This time I'm going to use it in my boat. The engine has developed a leak that I think located on the front timing cover. It's a pretty severe leak and I do intend to fix it but for the moment I want to see if this stuff will help slow it down until I can get to it. Additives such as this have limitations to what they can cure and my bet is that this leak is too great for this to stop it but for the price it's worth giving it a shot.

### ⭐⭐⭐⭐⭐ Great !
*by A***X on September 29, 2025*

This is an amazing product. It is not cheap for the quantity that comes in the bottle, but it is indeed a great product. I haven't used yet on the oil or steering fluid (which is its original purpose), but to rejuvenate rubber parts of the suspension, as Scotty Kilmer and other youtubers recommended. It can be placebo effect, but I feel my suspension compoments softer. Try it yourself.

## Frequently Bought Together

- AT-205 Seal Leak Stopper 8 Ounce - 2 Pack
- ATS Chemical 505 CRF Fuel System Treatment, 16 fluid ounces
- ATS Chemical 505 CRO Oil System Treatment (505 CRO Oil System Treatment 12 FL OZ)

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---

*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-01-24*