Per the NOACK question Molakule taught me this there is a difference in measuring,and the ASTM D 5800 is a much tougher test and will show a higher number than mere voality which is percent of evaporation at 700 degrees-ASTM D 2887 ,,so when a data sheet on a simalar oil shows a almost double number the 5800 method has been used.
I think someone asked about The group III vs the group II. Other than for winter use I think the group II is the best value and honestly think the 10/40 is over looked VI improvers or not,it is a great oil for summer or hard work,if you don't agree,please don't tell my Daughters Cavalier that because I just changed at 6200 miles -6 months and yep,the Super Tech anti drain back valve still was working
After analysis I now know why Johnny thinks the additive package is better that the Motorcraft oil,it's because it is! I think imo it is the best OTC group II oil on the market for automobiles. Now I'm not talking HD oils with SL designation. For a catalyst car I like the new Phillips 15/40 with it's low sulphated ash"1.0" percent and 1300 parts per million zinc but I have quit that as well,the Delvac 1300 just kills my gas milaege in the 302,I have got better with 20/50 motor oil. We all have our opinions but for that Van above,I think it would be better served with a 20/50 or a 10/40 Pennzoil,just my opinion.
Will be interesting to see if Dutch Shell lets Pennzoil bring back the PAO oil they make for over seas. And or to continue that new style synthetic they have developed,EOP or something like that.
I personally would like to see the group III's name of synthetic reversed back to premium grade oil or something,some of my closest friends did not know about this and just imagine what the other non motor heads know,just what they are told,not the truth in labeling or TV commerials ect. I think it is one of the worst things to ever happen to the American Consumer imo and that someone should be held accountable for it,sure it went through court,still not right though