Schaefer vs Sta-lube??

[Volveezy 70005]

I've been using Sta-lube in my 2250 isx with rotella 15w-40 and I can't complaint but just recently a buddy of mine recommended Schaeffer's moly and I won't switch because I'm happy with STA-lube and my motor performs like a beast that it is..but I'd like to know what y'all think about this shaeffers...good day yall
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