It is a quick fix, nothing more.....
I'm all for American products. And all for Americans fixing things correctly. That stuff is tiny and finds it's way into all the nooks and crannys in your motor.
I've used it, it worked in one case after I used it 3 times and in the other the water pump failed and the cavity was filled with the stuff......
It is a good quick fix product and I endorse that fact!!
All our government does is distract us while they steal from us, misspend our tax $ and ruin our country