5.0 out of 5 stars Actually worked on a minor seal leak.

t. · June 18, 2025

(function() { P.when('cr-A', 'ready').execute(function(A) { if(typeof A.toggleExpanderAriaLabel === 'function') { A.toggleExpanderAriaLabel('review_text_read_more', 'Read more of this review', 'Read less of this review'); } }); })(); .review-text-read-more-expander:focus-visible { outline: 2px solid #2162a1; outline-offset: 2px; border-radius: 5px; } 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 storeThis 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 to.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 helped.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 sealIf 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.

5.0 out of 5 stars Got a leaky engine, will update if this product stops the leak!

S. · June 1, 2025

I got a 2001 Chevy truck 4x4 with the 4.3 Vortec. It leaks a little bit of oil. If you know, dropping the oil pan on a 4x4 gm is not the easiest job to do, so I decided to try at205 and see if it can do anything about the oil leak.The timing cover, the oil pan gasket, and the rear main seal is all seeping a little bit of oil. The whole oil pan is wet, but it’s not a big enough leak to ever drop on my driveway.I poured 2/3 of this bottle into my engine, because my engine takes 4.5 quarts of oil.I will drive the truck with at205 in the engine until I see an improvement, and I will post an update below.I bought three bottles of at205, because I will also use this product on all rubber parts on my truck, like the weatherstripping and bushings.Will update if I see an improvement with the oil leak.Edit:UPDATE at 3 days since I poured it in the engine:I went under my vehicle and washed off all the oil and dirt buildup two days ago after I poured in the at205 and did a quick 30 minute drive, on day 1.I went under the vehicle again today (day 3), and there still is a very little bit of oil coming out of the front main seal, but I do not see any oil from the rear main seal or the engine oil pan gasket. It is dry. The front main seal leaking is now very very minimal. Not even enough to coat the underside of the oil pan anymore. Super happy to see this.I will post an update again in a couple days. I will wash the underside of the engine again tomorrow, then post an update on day 6.

5.0 out of 5 stars A lifesaver for my oil leak

M.P. · May 7, 2025

I can’t say enough good things about stop leak. My high-mileage car had a persistent oil leak coming from the engine, and I was looking at a pricey repair job. After some research, I decided to give this product a try as a temporary fix—and it worked better than I expected.I followed the instructions and poured it directly into the engine oil. Within just a couple of days, the leak slowed down dramatically, and by the end of the week, it had virtually stopped. I’ve now driven over 1,000 miles without a single drop on the driveway!What impressed me most is that it didn’t just mask the problem—it actually reconditioned the seals and helped reduce engine noise too. It’s a great solution if you're dealing with an aging engine and want to avoid an immediate, expensive trip to the mechanic.For the price and ease of use,it is absolutely worth it. Just make sure to use it exactly as directed and give it a little time to work. Highly recommended for minor to moderate engine oil leaks!

Hinterachsleck wieder dicht

A.K. · June 22, 2024

(function() { P.when('cr-A', 'ready').execute(function(A) { if(typeof A.toggleExpanderAriaLabel === 'function') { A.toggleExpanderAriaLabel('review_text_read_more', 'Read more of this review', 'Read less of this review'); } }); })(); .review-text-read-more-expander:focus-visible { outline: 2px solid #2162a1; outline-offset: 2px; border-radius: 5px; } Das Produkt hält was es verspricht.

Must buy, worth product

A.C. · May 9, 2024

It is useful and powerful product which solve 100% your car issue. I strongly recommend it. Must buy worth product.

Original and Genuine

a.a. · March 9, 2025

Original and Genuine

Product niet ontvangen

K. · November 13, 2024

Op het laatste moment is mijn bestelling geannuleerd door verkoper.Bedrag nog niet retour ontvangen.

Great product

M. · January 3, 2025

Did exactly what it said, it stopped the engine oil leak