most of the basic blue STP I see are champ labs made. I have a few of the STP Extended Life filters those are made in China. Also have two STP Maximum Life S4967 ML: Purolator made
most of the basic blue STP I see are champ labs made. I have a few of the STP Extended Life filters those are made in China. Also have two STP Maximum Life S4967 ML: Purolator made