Oil occupies a rich and multi-layered position in the depth-psychology corpus, functioning simultaneously as a substance of physical vitality, a medium of sacred transmission, a symbol of divine anointing, and — in modernity — a focus of collective addiction. R. B. Onians provides the most sustained scholarly treatment, demonstrating that in archaic Greek and Near Eastern thought oil was understood as a concentrated form of life-substance (aiōn), functionally equivalent to seed, marrow, and fat. Anointing the body with oil was not mere grooming but a ritual infusion of vitality through the pores, and the anointing of kings was understood as a begetting — the conferral of divine sonship. Onians further identifies oil as the earthly counterpart to ambrosia, the divine grease of immortality, and shows its centrality to funerary practice, libation rites, and sacrificial offering. Walter Burkert corroborates oil’s place within Greek libation sequences offered to the dead. Von Franz, reading alchemical texts, registers oil’s pneumatic dimension in the phrase ‘oil of gladness,’ linking anointing to the gathering of scattered soul-particles. Gabor Maté introduces a striking modern inversion: petroleum-oil as the object of civilizational addiction, exposing the same compulsive logic that governs individual substance dependency. Together these positions reveal oil as a term at the intersection of somatic mysticism, sacrificial religion, alchemical symbolism, and contemporary socio-political pathology.