For those knowledgeable of the various later releases of Pennzoil Ultimate Platinum 5W30 (PUP) from say SM -> SN/SN+ -> SP what significant negative changes / trends have you noted with the newer PUP oil versions ? While none of the PUP versions are a long drain synthetic oils , it appears that one or more of the positive qualities that PUP users previously appreciated back with the SM rated version (or even the SL version) are deemed to not quite be the higher quality PUP that fans of this oil previously experienced with earlier versions (i.e. non-GTL ?)- what specifically are the exceptions you take with the newer rated PUP oil versions ? *Higher NOACK and higher use of VII's are all I could see regarding this question as it relates to the newer PUP versions (i.e. 5W30) .