quote: Activator, for any given level of surface preparation, is generally considered to be more aggressive in oil. My impression when I first threw Activator was that it almost had characteritics of a particle ball, the way it gripped. When PK 18 was first introduced in the old Danger Zone it was about the strongest reactive shell on the market. When Activator was introduced on the original Inferno it represented a step up in strength similar to what PK 18 had done in 1996 for the DZ. Only Brunswick knows exactly what the chemical differences are in the makeup of a PK 18 shell versus an Activator shell.