BEST SELLER $25 Each - AW 46 Hydraulic Oil Fluid (ISO VG 46, SAE 15) - (36) 5 Gallon Pail Ships Fast.. Antiwear Hydraulic Oil ISO VG 46 is a premium midweight weight paraffinic based hydraulic oil, ideal for industrial applications or for the hydraulic systems in cold weather regions. It is a rust and oxidation (R&O)-inhibited oil with the added benefit of an antiwear additive package for protection. Approved for industrial applications requiring an ISO VG 46.