I was just watching the speed network and i was watching that show they have called "truckU" where they fix up old trucks and stuff. They were talking about the 02 sensors and one of the guys had a little "quick tip" and he said that the vmax fuel additive helps keep the 02 sensor clean and by doing so helps it keep at full operating capacity and helps fuel economy.
I thought it sounded like another gimic, basically something that zmax probably paid them to say as subtle advertising. But just wondering if anyone has actually tried the stuff.
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