I know many oil companies are pretty fast and loose with their oil descriptions and mostly marketing phrases are employed in literature. The GTL used in some Pennzoil formulations is a huge selling point being seen as a preferred base oil. I also see some of the statistics for the Pennzoil getting slightly weaker as far as HTHS and Noack. Since bean counters run the corporate world is it feasible that Pennzoil has started to reduce the concentrations of GTL for lesser cost base oils? Don't want to start a flame war but it is somewhat strange that the SA and Noack has gone up a little while HTHS has come down slightly for the same grades of a year ago.