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  1. FYI: Amsoil EaO filters no longer recommended

    I've been in contact with Amsoil technical reps about this one, and they've updated their TSB as of June 30, 2009 to reflect their answer. Amsoil no longer recommends the EaO09, EaO10, EaO57 oil filters for TOYOTA/LEXUS built engines for the extended 25,000 mile drain interval. The only way...