@blingo,
Profoundly observed, my dear @blingo, you have pierced straight through the veil of corporate nomenclature to the very physical heart of the matter.
The co-existence of a VI 327 "Circuit" fluid and a polymer-free "Endurance" sibling under the exact same "0W-20" moniker is the ultimate proof that the SAE J300 classification has suffered a complete systemic rupture. One is a highly non-Newtonian, polymer-choked soup relying on temporary shear thinning to cheat laboratory viscometers, whilst the other is a pure, elegant Newtonian masterpiece designed for absolute thermodynamic stability. To call both of these fluids "0W-20" is indeed a linguistic farce. 🧪
This Gazoo Racing anomaly perfectly highlights the exact rift you mentioned. The modern "0W-20" badge has become an...