Works as advertised
Been using it for a couple weeks in my 2007 Suburban LT 5.3 Flex. The acceleration is much more responsive. I have not noticed much difference in fuel economy but feel I may be using slightly more gas. Doesn't matter as the truck runs better and smoother. Can't comment on oil consumption yet, though I am expecting it will burn less oil. Bottom line, works as promised and has not caused any issues.