The new OEM ones are crap! Don't think they are in that link.
Zinc and Moly are the key additives that reduce/prevent galling and stuff like spun bearings, but nothing can stop it if the gap/tolerance goes to zero from heat/whatever.
I am not suggesting a particular additive, it was kind of an off the cuff remark.
If Eneos is so good, why would you consider an additive? You are choosing to use $6/qt imported Eneos that is not commonly used in the US Subaru community vs. $6-8 RP and Red-Line that are with pretty good results.
If you really want to know how your oil is doing, don't F around with different flavors/weights, get it tested! Go read Bob's stuff. You are playing around with something that will cost you $3K+ to swap if you screw up. Spend a few bucks to test what you have or go with what is proven to work. just my $.02...
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I am a Commodore PET --- Now get off my lawn you kids...
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