"Have you had any experience with this product?Thanks, Hones"
No Sir, I haven't. I've been using Bars Leak since I was a kid driving a 54 Ford Y block V8, and that was many years ago, so until bars leak quits working for me I'll hang with it. We use to use regular old ground black pepper and it would get in the leak and swell up and stop it up. Black peper is nothing more than tree bark and gets in the leaks then swells up. Sounds like what the GM man sold you is something similar to black pepper. I like bars leak because you don't have to dump your anti freeze, just drain or siphon a quart out of the radiator then dump in the bars leak and boogie on down the road. I've got an extra can of bars leak in the van and if it goes to leaking I'll dump in another can. What the heck, at three bucks a can it's a heck of a lot cheaper then a new manifold gasket. Now, when and if I ever see evidence of water in the oil, yes, I'll bite the bullet and have the new manifold gasket installed. But as long as the leak is external dripping on the garage floor, . . . . shoot fire Hones, I'll buy a whole case of Bars Leak and do the Bars Leak Boogie.