Main difference from what I have seen in various PDS sheets is lower pour point and lower NOACK. Pennzoil (Shell) briefly offered on the U.S. market Ultra 5W40 oil with 6.8% NOACK and HTHS of 3.88cp.
Then soon they offered Platinum and kind of "diluted" those numbers.
I saw some BMW TwinPower Turbo oils (made by SOPUS) with respectable NOACK umbers. I think their M 0W40 oil is 8.1%.
XOM is more "iffy" in which oils they use GTL.
Then soon they offered Platinum and kind of "diluted" those numbers.
I saw some BMW TwinPower Turbo oils (made by SOPUS) with respectable NOACK umbers. I think their M 0W40 oil is 8.1%.
XOM is more "iffy" in which oils they use GTL.