Ok, first off this is not about whether HPL makes good fluids. I use them exclusively in my drivetrain and trans and have gone through a case of no VII in the past as well. I like their stuff.
What I'm wondering is if a timing chain operated gas engine is not LSPI prone, doesn't have fuel dilution issues, doesn't consume oil, no warranty concerns, and don't care about CAFE, why would one use an SP rated oil (Premium Plus PCMO 5W-30) vs a 504/229.51, etc rated oil (Euro PCMO 5W-30) with an arguably better additive pack? Base oil chemistries and VII's should be similar with presumably only the additives being different. So why not use the 'better' Euro for every application that doesn't have specific needs?
What I'm wondering is if a timing chain operated gas engine is not LSPI prone, doesn't have fuel dilution issues, doesn't consume oil, no warranty concerns, and don't care about CAFE, why would one use an SP rated oil (Premium Plus PCMO 5W-30) vs a 504/229.51, etc rated oil (Euro PCMO 5W-30) with an arguably better additive pack? Base oil chemistries and VII's should be similar with presumably only the additives being different. So why not use the 'better' Euro for every application that doesn't have specific needs?
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