for high quality at a fair price pennzoil's new GTL platinum with pure plus technology is good. their 0-20 noack is 10.8 ok but the 5-20 is 8.6 pretty good, their 10-30 is my choice with a noack of 4.7, thats great also less VII's, a stronger oil overall. few places require a lower low # as the group III fake synthetics are cleaner + flow well at lo temps