another alternative is that you can go pay like 40 bux and get Z MAX kit. You can get it at any kragen. pepboy and autzone stores. I had a buddy use that on his 96 Galant and his engine inside is like brand new lookin.
the Z-max thing i found it at the local pep boys , kragen and autozone.As for the oil additive, I question how well it works when I can find it at the mall in the "As Seen On TV" store.