I've written to AmsOil asking them if they offer a suitable oil. I'll post the answer here when I get it.

-Scott


1997 SR5 5-Spd. TRD Supercharger, URD Supercharger Performance Kit, "Bamachem Designed" 2.5" suspension lift, 265/75R16 Bridgestone Dueller Revos, Airbox Mod, Amsoil: (Air Filter plus engine, diff, x-fer case, + tranny oils)