AT-205 Automatic Transmission Re-Seal Automotive Additive Bottle 8 ounce
AT-205 Automatic Transmission Re-Seal Automotive Additive Bottle 8 ounce
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AT-205 Automatic Transmission Re-Seal Automotive Additive Bottle 8 ounce

Key item features

  • Leak Sealing: Professional strength formula designed to quickly and effectively seal leaks in automatic transmissions, restoring performance.
  • Broad Compatibility: Compatible with all automatic transmission fluids, as well as conventional and synthetic oils, gear oil, power steering fluids, and hydraulic oil.
  • Seal Restoration: Fast-acting re-sealer that restores worn or dried out rubber seals and gaskets without harming internal bearings or components.
  • Versatile Application: Stops leaks in engines (gasoline and diesel), automatic and manual transmissions, power steering systems, differentials, and hydraulic systems.
  • Safe Formulation: Does not contain petroleum distillates, ensuring it will not over-swell or break down seals.
  • Easy Application: Simple to use; just add the 8-ounce bottle of additive directly to the transmission fluid.
  • Preventative Maintenance: Helps prevent costly repairs by effectively sealing leaks across various automotive and industrial systems.
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Current price is $21.57
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4.224271012006861 stars out of 5, based on 2334 seller reviews(4.2)
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Customer ratings & reviews

4.5 out of 5 stars
stars191 ratings71 reviews
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Reviews summary

Pros

  • : Prevents oil leaks and retains oil.
  • : Offers lower prices than competitors.
  • : Reduces oil leaks in various vehicle systems.

Neutral

  • : Can be effective for small leaks, but may not seal larger ones.
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Showing 1-3 of 71 reviews

Feb 26, 2026
Greg
Sold byAbit ProductsDelivered byWalmart
5 out of 5 stars review

Verified Purchase

Fantastic product

I use it in my 25 year old jeep with a leaky rear main seal and it works perfectly just don't depend on Walmart delivering your order to the correct address. Find another vendor.

Helpful?2ES2N6WB0ZUY171600091
Jan 18, 2026
donna
Sold byAbit ProductsDelivered byWalmart
5 out of 5 stars review

Verified Purchase

Excellent product! Best Price! ATP-205

ATP AT-205 Re-Seal is a remarkably effective solution for stopping fluid leaks in high-mileage engines and transmissions. This powerful seal conditioner revitalizes dried and shrunken seals, often completely eliminating leaks with just one treatment. For owners of older vehicles, it's a proven, cost-effective product that preserves reliability and prevents costly repairs, solidifying its outstanding reputation in automotive care.

Helpful?2ES2N6WB0ZUY171600091
Nov 19, 2025
LAWRENCE
Sold byAbit ProductsDelivered byWalmart
5 out of 5 stars review

Verified Purchase

I have been using AT205 approximately 4 years now. It has stopped my low oil pressure and rear engine seal leak situation on my vehicle. 5.3 LS motors are known for this. Very expensive repair. New pump and seal , oil filter miscellaneous, LABOR!!!!! $$$$ You MUST Change the oil and filter and THEN add a bottle of AT205. Run your car a few hundred miles. The oil pressure should go up and leaks should become less or non existent soon after! This product will rejuvenate and swell up your seals so they don't leak anymore. This worked for me! I'm only a customer I do not work for Walmart or the company that makes this product! I am not getting paid for this review. Although I should be with all the information and time I've spent writing this. I use this product Every oil change !! Absolutely Change your oil First before adding this product !!! If your not willing to do this ? Don't bother buying this product!! Whole lot cheaper than a new motor or new vehicle!!!!!

Helpful?2ES2N6WB0ZUY171600091