Originally Posted by ChrisD46
I would ... Super Tech Synthetic 5W30 for instance meets D1 / Gen 2 . By how much head room , I don't know - but it still has to meet the spec . Warren is not some fly by night company - they run a good company and save you money due to no advertising .
Originally Posted by PimTac
Most here would consider Warren Distribution a trusted supplier.
Warren is a good company, they make good stuff as proven by its many users' experiences and lab tests. The high Moly in QSUD could make the difference in some applications, but the vast majority of users will do well with either.
That being said, any other criteria beyond "they both meet the specs" will be the defining one when choosing one or the other: Price, color and shape of the jug, etc. And last but not least, trust in the manufacturer. As silly as it may seem, trust combined with price point is what moves the market. Not UOAs.