I'm confused. I was under the impression from other posts on the board that the synthetics marketed under the Penzoil and Quaker State labels were group III oils. The MSDS sheet on the Quaker State says the main component is 1-Decene. I thought if the sheet had this compound listed, that was a good indication the oil was a PAO? I know very little about chemistry so I don't really know. What's the deal?