I have a tiny transmission fluid leak of maybe a few milliliters a day in my 2000 Chevy S10 pickup truck with the 2.2l engine rear wheel drive automatic transmission at 170k miles. I have been changing the fluid regularly and was wondering if adding a bottle of AT205 reseal since it's as I assume to be just a temporary fix will keep the seal leak closed up long enough for me to get the seal replaced. How much time does AT205 reseal buy me? A week a month a year 2 years time before I have to change the seal that is leaking?
1. Out of my experience, 3 years are realistic to expect. The oldest "repair" Ive personally carried out using the AT-205 is 3 years old, and the engine seal is still not leaking again, and the years are still counting. Btw the engine oil I added the AT-205 to was then, in due time, dumped and replaced with oil with no AT-205 within 2 years ago, and the car underwent 2 subsequent oil replacements with no AT-205 added since that time.
2. The transmission I also successfully fixed using this product has had transmission fluid with AT-205 within for ca. 2 years now, and also still counting and still OK. I did not change the transmission fluid since that time, so the AT-205 still stays within.
3. Scotty recommends adding the AT-205 each time you replace the corresponding oil, if I am not mistaken. Maybe it is an overkill, but it does no harm. So follow Scotty´s advice if you want to be on the safe side.
4. If I correctly understand how this thing works, is that its molecules sneak in-between the molecules of dry rubber, restoring rubber elasticity and volume. There are multiple known chemical agents which can act in a similar basic fashion, but most of them (like kerosene) only give short-term improvement, and leave rubber in an even worse shape than before as they evaporate. If I understand the basic idea behind the AT-205 product, its creators had luck with finding a formulation which a) would stay inside the rubber, keeping it as-new, sort of indefinitely, and b) would not damage rubber in any way.
5. Of course the AT-205 will not restore cracks and also will not restore abrasion damages. So if your leak is due to one of these reasons, the AT-205 will be unable to help, as Scotty mentioned several times in his videos.
'AFAIK-disclaimer goes here`
I have a tiny transmission fluid leak
where?
AT-205 isn't a cure-all. It's a clear polymer that rejuvenates rubber seals, and only rubber seals. It may, or may not solve your issue. My '79 Pontiac's input shaft seal needed replacing, the rubber was old, but intact. It's never been out of the car, since it was originally built. AT-205 solved it, but I still will eventually replace it. If the seal is torn, the only thing that can be done is a totally new seal. Where on the transmission and how badly it leaks is critical.
AT 205 might help a transmission leak but there's certainly no guarantee on how long it might work. Longevity of repair isn't even implied in this type of product because they're marketed as a temporary fixes.
In your case I would give it a try. Just remember to adjust your overall transmission fluid level by an amount equal to a bottle of AT 205.
I have a tiny transmission fluid leak
It's a clear polymer that rejuvenates rubber seals, and only rubber seals.
Try a bottle.. Scotty's sentiments about AT205 are made clear in this video
It might stop the leak, if it doesn't, no real harm..
https://youtu.be/VYuF02wTx8w?t=86
I already tried it and had success using it. Try reading the text again. You need a specific amount based on the total amount of fluid in the transmission, otherwise it will become too soft, and you could easily make it worse.
Posted by: @imperator
at-205 is not a polymer. It's just ethylene glycol. Same as brake fluid (which absorbs water)
By MountainManJoe 25/07/2023 7:53 pm