Has anyone ever used this product (http://www.restoreusa.com/restorer.html) the engine restorer that you can buy at the local parts store. A guy at work that drives a 96 cobra uses it, and swears by it. Then again, someone else said its like slick 50, and slick 50 completley ****ed up his motor. So I'm a little hesitant to use with the second opinion ive heard, so has anyone else heard anything about this product, or even used it? if so how did it work?

Do you crack the block open and check out the surface after you run it for a few thousand miles.??

