Choose a Store 0 Car icon Add a vehicle Chevron Down Search for parts This product works on minor to medium leaks. Try it! Actually works but, my leak was minor. This product is for minor leaks not huge neglected cracks in seals and gaskets. If you notice a large leak is it worth a try? Yes, it is. That said don't say the product didn't work. Say your leak was to far gon...Read More Close icon Home > ATP Automatic Transmission Re-Seal - # AT-205 ATP Automatic Transmission Re-Seal - # AT-205 141 reviews 1 YR REPLACEMENT IF DEFECTIVE Part # AT-205 Price $12.29 Qty: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 Store Pickup No stores available near you Find More Stores Ship To Home Ships for free on orders over $35 Add to Cart Share Product Details Q & A Write a Review Ask a Question CUSTOMERS ALSO PURCHASED $2.29 (201) FloTool Multi-Purpose Funnel $24.49 (102) BlueDevil Oil Stop Leak $13.49 (173) Lucas Oil Products Engine Oil Stop Leak (1 qt.) $14.49 (255) Lucas Oil Products Transmission Fix (24 oz.) $9.99 (458) CRC Mass Air Flow Sensor Cleaner (11 wt. oz.) $5.99 (844) CRC Brakleen® Brake Parts Cleaner (19 wt. oz.) $10.29 (2287) Sea Foam Motor Treatment, 16 fl. oz. $12.99 (194) K-Seal Coolant Leak Repair, Head Gasket Sealant, Block Sealer, Radiator, Heater Core Stop Leak $9.79 (37) Bar's Leaks Rear Main Seal Repair, 16.9 oz. $16.49 (77) BlueDevil Rear Main Sealer Product Details Customer Reviews Customer Q&A Product Details Part No. AT-205 Warranty Details (1 YR REPLACEMENT IF DEFECTIVE) Product Features: Professional strength fast-acting re-sealer TOP SELLERS IN THIS CATEGORY $8.49 (144) Marvel Mystery Oil Marvel Mystery Oil MM12R Oil Enhancer & Fuel Treatment (32oz.) $5.19 (73) STP Oil Treatment (15 fluid ounces) $14.29 (36) Restore Engine Restorer and Lubricant with CSL 8-Cylinder Formula (16 oz.) $13.99 (372) Lucas Oil Products Heavy Duty Oil Stabilizer (1 qt.) $19.99 (185) Lucas Oil Products Pure Synthetic Oil Stabilizer (1 qt.) $18.99 (0) Hot Shot's Secret Diesel Treatment $8.49 (7) LIQUI MOLY MoS2 Anti-Friction Engine Treatment, 300 mL $16.49 (1) Lucas Oil Products High Mileage Oil Stablizer (1 qt.) $6.99 (1) Lucas Oil Products Complete Engine Treatment (16 oz.) $10.99 (32) Rislone Hy-per Lube Zinc ZDDP Supplement, 11 oz. Customer Reviews 4.63 out of 5 141 Customer Reviews Write a Review 96% of respondents would recommend this to a friend Ratings Distribution 5 Stars 115 4 Stars 15 3 Stars 3 2 Stars 1 1 Star 7 Pros No Pros Cons No Cons Thumbs Up Most Liked Positive Review This product works on minor to medium leaks. Try it! Actually works but, my leak was minor. This product is for minor leaks not huge neglected cracks in seals and gaskets. If you notice a large leak is it worth a try? Yes, it is. That said don't say the product didn't work. Say your leak was to far gone for the product to help(that's the truth). I say this because I see many criticizing AT-205 when it doesn't work for them. I read more positive than negative reviews before my purchase. That made me buy this. It worked almost immediately. If you have questions call your dealership or find info from manufacturer of your car and see if it's ok to use for your car. It is safe to use on all engines and transmissions and other parts of the car(NOT BRAKE SYSTEMS DO NOT PUT IN BREAK SYSTEMS). To me, this product is good if it works or not. If it works you know your leak was minor. You can drive knowing your car is ok and not be quick to repair it because minor leaks this product works on no longer have to be addressed. If product doesn't work you'll know the leak is in need of a repair when you can get it done. It's basically a cheap way to analyze the car. My hope is for everyone who tries this that the leaks minor. Periodically check below your car if you have anything below that will not allow you to see leaks like I did. It fell on a metal shield below my engine. I felt the leak by trying to clean it. It was minor. AT-205 immediately closed the leak(also I smelled oil burning prior to using AT-205 and after using it smell went away in 2 days). Good luck people Thumbs Down Most Liked Negative Review Didn't Work For Me Product is easy to use; however, I haven't seen any change to my engine oil leak after two weeks of operation. I had high hopes for this additive, but perhaps my leak has progressed too far. I have an older Toyota 4 cyl and suspect the leak is around the oil pump O-ring and its not easy to access, otherwise, I would just replace it. Oh well, it was worth a shot! Reviewed by 141 Customers Most Recent Most Helpful Lowest Rated Highest Rated Oldest Image Yes Submitted 21 days ago Best stuff! 1 0 Flag this review oh yes Verified Buyer - Submitted a month ago added to my engine oil for a leak and it stopped it 1 0 Flag this review Yes Submitted a month ago Great product for rubber part's Bottom Line Yes, I would recommend to a friend 1 0 Flag this review yes I would buy again Verified Buyer - Submitted a month ago Straight to the point..excellent 0 0 Flag this review I buy this amazing product with every oil change. Submitted a month ago I purchased a used Land Rover LR4. After about a year I had a massive oil leak in the front of the motor. The serpentine belt shredded and it caused a lot of damage, including ruining my alternator, damaging components and etc. The repair cost was in the thousands, but they were not able to identify the source of the leak, so it continued to leak and cause problems. So, on advice, I purchased a bottle of At-205. It stopped the leak almost immediately and that was 5 years ago. I add a bottle with every oil change and haven't had a leak since then. I swear by this stuff. Bottom Line Yes, I would recommend to a friend 3 0 Flag this review Displaying Reviews 1 - 5Back to Top Previous Next CUSTOMERS ALSO LIKED $5.99 (1022) Rain X 2 in 1 -25 Degree All Season Windshield Washer Fluid (1 Gallon) $9.79 (298) Chevron Techron Complete Fuel System Cleaner 12oz $15.99 (543) Chevron Techron Complete Fuel System Cleaner 20oz $6.29 (524) Lucas Oil Products Fuel Treatment UCL & Injector Cleaner (5.25 oz.) $8.49 (629) Valvoline DOT 3 and 4 Brake Fluid (32 oz.) $14.29 (441) Mobil 1 Synthetic Gear Lubricant LS 75W-90, 1 Quart $9.79 (608) Permatex Anti-Seize Lubricant (8 oz.) $4.79 (1361) Wearever Brake Parts Cleaner Non-Chlorinated $6.99 (307) CRC Throttle Body & Air-Intake Cleaner (12 wt. oz.) $6.49 (1) Scott Towels Shop Towels Original (75040), Blue, 55 Towels per Standard Roll Customer Questions & Answers Ask a Question How do I order the stp 2500? Add your answer Verified Reply - Solomon Hi Lloyd, I'm glad to help you! We do handle only technical questions regarding product fitments, specifications, diagnosis and repairs. For order related quires, please feel free to call us at: 1-877-ADVANCE (238-2623) or contact our "Live Chat" support and one of our representatives will gladly assist you with any questions or concerns you may have. 0 0 Is AT-205 being replaced by another product? Add your answer Verified Reply - Steve Hi Paul, I'm glad to assist you! You want to change your old oil out first, then add another product to the new fresh oil. This ATP Automatic Transmission Re-Seal - Part # AT-205 works different from other products, but you always want to do it with fresh oil change, that way you get optimum performance. 0 0 When do you plan to have this product available Add your answer Verified Reply - Solomon Hi Jose, I'm glad to help you! This ATP Automatic Transmission Re-Seal (Part # AT-205) is not available for online purchase at this time. All items listed on our site should be available at our stores or at our warehouse, but some times, due to high demand, the items may go out of stock. If an item goes out of stock, it will usually be restocked within 2 to 3 weeks time. We recommend that you visit one of our stores located near you or check back with us after 2 to 3 weeks as we are not kept apprised of future shipments. For re-stock related quires, please feel free to call us at: 1-877-ADVANCE (238-2623) or contact our "Live Chat" support and one of our representatives will gladly assist you with any questions or concerns you may have. 0 0 is at 205 available? Add your answer Verified Reply - Solomon Hi Rob I'm glad to help you! This ATP Automatic Transmission Re-Seal (Part # AT-205) is not available for online purchase at this time. All items listed on our site should be available at our stores or at our warehouse, but some times, due to high demand, the items may go out of stock. If an item goes out of stock, it will usually be restocked within 2 to 3 weeks time. We recommend that you visit one of our stores located near you or check back with us after 2 to 3 weeks as we are not kept apprised of future shipments. 0 0 when will this be back in stock Add your answer Verified Reply - Solomon Hi Ap, I'm glad to help you! This ATP Automatic Transmission Re-Seal (Part # AT-205) is not available for online purchase at this time. All items listed on our site should be available at our stores or at our warehouse, but some times, due to high demand, the items may go out of stock. If an item goes out of stock, it will usually be restocked within 2 to 3 weeks time. We recommend that you visit one of our stores located near you or check back with us after 2 to 3 weeks as we are not kept apprised of future shipments. 0 0 Displaying Question & Answer 1-5 Show more Q&A RECENTLY VIEWED AND RELATED ITEMS $7.35 (71) Bondo Fiberglass Resin Repair Kit, Quart (US) Can $18.99 (371) Mobil Delvac 1300 Super 15W-40 Conventional Heavy Duty Diesel Engine Oil, 1 Gallon $3.95 (11) Bondo Autobody Filler Kit, Quart (US) Can $1.15 (16) AutoCraft Car Cleaning Tire Dressing Wipe/Applicator, 4"x1.5" Foam, Contour Handle, Washable & Reusable $3.99 (0) Prime Guard Prime Guard -20 WWF $16.99 (44) Valvoline Premium Blue 8600 ES 15W-40 Conventional Heavy Duty Engine Oil, 1 Gallon $4.95 (18) Bondo Metal Reinforced Filler $2.95 (16) 3M Leather and Vinyl Repair Kit, 08579 $38.49 (98) Bar's Leaks Head Seal Blown Head Gasket Repair, 33.8 oz. $2.95 (25) AutoCraft Microfiber Car Wash Towels, XL, 3pk Feedback TOP REPLACEMENT PARTS Brake Pads & Shoes Brake Rotors Alternators Water Pumps Show All POPULAR MAKES Ford Parts Chevrolet Parts Honda Parts Dodge Parts Show All ROUTINE MAINTENANCE PARTS Spark Plugs Car Batteries Oil Filters Motor Oil Show All SHOP BY Manufacturer Brand Vehicle Make / Model Performance Parts Lawn & Garden Boating & Marine Motorcycle & ATV CUSTOMER SUPPORT Accessibility Statement Contact Us Forgot Password Help Desk In Store Pickup In Store Services Order Tracking Recall Information Return Policy Same Day Delivery UBER Driver Rewards ABOUT US Affiliate Program Career Opportunities Corporate Information Gift Cards Investor Relations 2020 Annual Report Annual Meeting Materials Material Safety Data Sheets Press Store Locator PROFESSIONAL SHOPS MyAdvance Online Parts Ordering TechNet Professional Technical Training Interactive Vehicle Animations Parts & Products Promotions & Rewards Shop Solutions Find My Mechanic FOLLOW US Facebook Twitter Instagram Pinterest YouTube © 2021 Advance Auto Parts ADVANCING A WORLD IN MOTION® Privacy Notice Terms Of Use Site Map