Seafoam was created in 1932 by a fisherman for his 2 stroke motor boat.
50% Pale oil (lube)
30% Naphtha (mild solvent)
20% Isopropyl alcohol (water dispersal)
None of these chemicals are catalyst friendly. The white cloud of smoke during a "Seafoaming" is combusted pale oil.
06 Escalade 6.0L AWD 160k. M1 5w30 Fram TG
03 Maxima 3.5L 152k ST HM 10w30