I repeated the test that they did in their ads; I used a compression tester before and after using Restore. I saw results similar to theirs, believe it or not. I had a 25% variance in compression range before and had an 18% variance after. Not as wonderful as their ads claim, but on the right track.
That might help with oil burning and blowby, but excessive blowby doesn't always decrease power. If you're looking at Restore to bring back power, it will disappoint. If you're looking at it to reduce oil consumption and blowby, it will help a little.