Sounds like you're just trolling here. If you really were interested you could easily find the Oil Analysis and long discussion about PP having anti-wear additives below API minimums, plus the tendency of the oil to thin below grade.
What testing?
PP 5W-30 VOA (Blackstone) - Phosphorus 541 ppm: fail
PP HM 5W-30 VOA (Blackstone) - Phosphorus 540 ppm: fail, CSt 8.9: fail
PP 5W-30 UOA - CSt 9.01: fail, Phosphorus 553 ppm: fail
PP 5W-30 UOA - CSt 7.96: fail, Phosphorus 578 ppm: fail
PP 5W-30 UOA - CSt 9.12: fail, Phosphorus 506 ppm: fail
PP 5W-30 UOA - CSt: 8.72 fail, Phosphorus 543 ppm: fail
PP 5W-30 UOA - CSt 8.58: fail, Phosphorus 571 ppm: fail
etc, etc, so many more. No fuel dilution in any of these tests. A clear pattern here. PP can't maintain viscosity and drops below grade, deep into x20 territory, like I said.
For reference, API SN/SP specify Zn/P anti-wear additives to be @ 600-800 ppm, and viscosity @ 9.3-12.5 CSt @ 100C. PP clearly fails to meet API minimums. I have not seen any other brand name synthetic (GTL or not) repeatedly test this bad. Even other Pennzoil products, like PUP, meet or exceed API req's.
The data speaks for itself. Ignore it at your own peril.