Quicksilver mineral 25w40 versus Mercruiser 25w40 semisynthetic oil

DanishgodDanishgod CanadaMember Posts: 35 ✭✭
is it acceptable to change your oil with mineral Quicksilver that is not specifically identified as semi syn although the oil manufacturer explicitly states that their QS oil exceeds all mercrusier requirements?

I have a 2013 MAG 350 that request that either synthetic or semi synthetic is required.
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