It did stop my oil pan from leaking for about 6 months. After that it started up again, but not as bad. I still need to change to gasket, there is not getting around that, but it did help alot.
Other than that, that's about it.

Unless you want to count the fact that I have right at 210K on my car now and the only oil I loose is at the oil pan and through the UIM. Minus the small stent of time that I was running very rich, my plugs are always clean as a whistle with a nice even grey burn on them. Not a single trace of oil in there.