I've heard Scotty talk about AT-205 Reseal. With that said, how does it work, without gumming up the engine? It seems like voodoo magic the way it works without reacting with oil or metal?
It works by expanding seals to stop the leak. It does not affect other components of the engine, and it doesn't contain any "hardeners". Scotty mentioned that you need to add a new bottle after each oil change. Now it says you can use it in automatic transmissions, but I wouldn't recommend it as automatic transmissions are very sensitive to fluid types and should only have ATF filled in them.
It would probably be OK in old-school non-electronic transmissions that use Type A/Dextron or Type F fluid.
I think you'll need to don your ninja outfit and undertake some corporate espionnage.
Probably. I've never tried it. And thinking about trying it on my 1999 Honda Accord. I have an oil leak. Not exactly sure where it is coming from. So I am doing some contingency planning. If it's the oil pan gasket, I may change it. But if it is the rear main seal, I may try AT-205. It seems doing the rear main seal is the price of the car, maybe even twice over.
does it drip?
I tried this AT-205 on my Civic's rear main seal leak when it was leaking bad and it worked relatively well, but still did not completely stop the leak. I would imagine if you catch the leak when it's still in the early stages, AT-205 will stop it completely.
@ad99
Do you still have that Civic?
No, not anymore. I used it as a backup car for several months, but I decided to donate it to charity. It needed some other work that was going to cost me a combined $2,200-ish. Plus it looked like a golf ball with all the hail damage - I miss it though 🙁 it was a good little car
ok so you didn't use it very long after you used the product.
No not very long - maybe 6 months and 4,000 miles. It stopped dripping on the ground, but it was still seeping out once the car was running.
@mountainmanjoe. Yes, it drips.
well what the heck. It's a 20 year car right. haven't got much to lose. But I would only add it one ounce at a time, until it stops dripping. Only use as much as is needed. I've seen video of the nasty aftermath of using too much seal swelling additive, and the seals just start to break down.
Thanks for the tip!
so if it expands seals, what's to stop o-rings and gaskets from swelling and jumping out their seats and REALLY messing things up?
That’s a good question.
Scotty. Please answer this question. Thank you!
Try searching
https://carkiller.com/scottykilmer/qa/at-2020-on-tires/#post-62472
It's glycol ether. A plasticizer.
https://en.wikipedia.org/wiki/Plasticizer
Also same as brake fluid.
I doubt that applying it topically does very much, though.
I think it CAN ruin your engine/transmission/axles if you put too much.
It does not swell seals or orings. Soak some in straight at-205 re-seal for a month. Then come back and check them. No swelling. No mushiness. It's a polymer that reconditions but does not swell.
do you have any photos or videos of such a test?