gasket sealer Your thoughts?

[cuda hunter]

What do you guys think about this?  Has anyone used it?  Comes recommended by someone who used it a few times for a few cars. 

https://www.summitracing.com/parts/atp-at205

[70 Challenger Lover]

I've always been afraid to use additives that are supposed to stop leaks. I figure there must be something that clots in some way to accomplish the task and I'd have to have that junk throughout my engine, radiator or whatever. Even if I was on the verge of tearing it down for a rebuild, I'd worry about getting it all out. I could be wrong though. Maybe someone here has used that product with good results.

[JonH]

What are you trying to do? This product is for seals, not gaskets. It is formulated to rejuvenate rubber/nitrile based seals. It will NOT fix a gasket leak. Read the product description. I have used this and similar products for seal leaks with some success...

[73440]

It has worked perfectly for me for almost 2 years in power steering pump.
It immediately stopped the leak and is still holding, it previously would empty overnight.

https://forum.e-bodies.org/engine-transmission-and-rear-end/4/argh-oil-leak/4562/
Here is a thread about this product , I also did a shade tree swell test on an oring soaking in it included in this thread.

[cuda hunter]

Power steering pump is leaking on a friends truck.  I'll read the other thread.  Thanks

[71-440]

I've used it in my work van. Rear main seal leaks. Worked for a couple months then the seal started leaking again.
The van has over 200,000 miles on it though so the seal might be well worn. It's not for sealing gaskets though like posted above.