Well back to the old oil debate, while researching today I found interesting info on Pennzoil, the chart Syn had posted ranked PPultra the best in psi ratings but the new ranking puts it # 27 way below ratings he found .# 27 5W30 Pennzoil “Ultra” Platinum, Pure Plus Technology, made from pure natural gas, API SN = 99,039 psi which is still very good, not sure why its now different.
It ranked Pennzoil plat 5-30 at # 66, Im not sure what all this means Im sure these guys can figure it out if. The psi ratings for the 0-30s were lower by a lot more too. I weeded out ones that were not 5-30 syn
34. 0W20 Mobil 1 Advanced Fuel Economy, API SN synthetic = 96,364 psi
zinc = 742 ppm
phos = 677 ppm
moly = 81 ppm
35. 5W30 Quaker State Ultimate Durability, API SN synthetic = 95,920 psi
zinc = 877 ppm
phos = 921 ppm
moly = 72 ppm
36. 5W30 Castrol Edge with Titanium, API SN synthetic (gold bottle) = 95,717 psi
zinc = 818 ppm
phos = 883 ppm
moly = 90 ppm
titanium = 44 ppm
38. 5W20 Castrol GTX, API SN conventional = 95,543 psi
zinc = TBD
phos = TBD
moly = TBD
NOTE: The two oils above were tested weeks apart, but due to the similarities in their wear scar sizes, their averages ended up the same.
40. 10W30 Amsoil Z-Rod Oil synthetic = 95,360 psi
zinc = 1431 ppm
phos = 1441 ppm
moly = 52 ppm
42. 5W30 Valvoline SynPower, API SN synthetic = 94,942 psi
zinc = 969 ppm
phos = 761 ppm
moly = 0 ppm
46. 5W20 Valvoline SynPower, API SN synthetic = 94,460 psi
zinc = 1045 ppm
phos = 742 ppm
moly = 0 ppm
48. 5W30 Eneos, API SN, synthetic = 93,135 psi
zinc = TBD
phos = TBD
moly = TBD
49. 5W30 Pennzoil Ultra, API SN synthetic = 92,569 psi
This was the original API SN version, that was NOT made from natural gas.
zinc = TBD
phos = TBD
moly = TBD
The older API “SM” version of this oil, produced a wear protection capability value of 115,612 psi.
53. 5W30 Maxima RS530 Synthetic Racing Oil = 91,162 psi
zinc = 2162 ppm
phos = 2294 ppm
moly = 181 ppm
54. 5W30 Red Line, API SN synthetic = 91,028 psi
zinc = TBD
phos = TBD
moly = TBD
55. 5W20 Royal Purple API SN synthetic = 90,434 psi
zinc = 964 ppm
phos = 892 ppm
moly = 0 ppm
60. 5W30 Havoline, API SN synthetic = 89,406 psi
zinc = TBD
phos = TBD
moly = TBD
66. 5W30 Pennzoil Platinum, Pure Plus Technology, made from pure natural gas, API SN = 87,241 psi
This oil was introduced in 2014, and comes in a silver bottle with a blue vertical stripe on the label.
zinc = TBD
phos = TBD
moly = TBD