AT-205 Seal Leak Stopper 8 Ounce - 2 Pack

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.

Fantastic product. Had a small (3-4 ) drip per day coming from my main seal on a Honda Odyssey and after a few days of driving it with this additive, the drip is gone. Revitalized my seals and prevented me from a very large repair bill.

Met and exceeded my expectations! My car has 220,000 miles and this has completely stopped the oil leak!

It works but occasionally, takes time. Sometimes simply wont work. I came here after scotty kilmers YouTube video. It's easy to use though. I used it for valve gasket leak and power steering leak. It stopped Power steering leak but not the valve cover gasket

Great item, fast delivery and cheaper than the local auto parts store!!

I had a rear main seal leak. Heard about this on u tube video added to oil and leak almost stopped if I go to long on oil change leak returns now add at every oil change. Leak all but stopped. Beats expensive repair

This product is working great so far. I had a decent leak in my vehicle, and the day after utilizing this product, after driving for a little over an hour and parking over night, I saw a significant decrease in the amount of the leak. Over a period of 3 days, the leak had decreased to only a few spots. Today, I drove for a straight hour to circulate the product some more; hopefully, I will wake up in the morning and see no leak.

Worked on my vehicle but didn't do jack for my wifes car after Valvoline Restore n Protect caused both rear main seals to leak. Because it didn't work on my wifes car I wasted HER money. I hate my life