Castrol Agri Hydraulic Oil Plus is a high viscosity index mineral oil that ensures excellent hydraulic response over a wide temperature range. Castrol Hydraulic Oil Plus satisfies the lubrication requirements of virtually all agricultural hydraulic systems, giving improved levels of protection. Along with ISO VG 46, its wide span viscosity characteristics also make it suitable for use in certain applications where an ISO VG 32 or 68 fluid is required.