The Shell Tellus range of hydraulic fluids deliver optimum value to manufacturing plants through enhanced wear protection, long oil life and high system efficiency. Shell Tellus is advanced, specialist hydraulic oil rang available in packages and viscosities Tellus S4 - Synthetic : Energy saving & long life (46) Tellus S3 – Mineral oil + Premium additive : Zinc-Free (32, 46, 68, 100) Tellus S2 – Mineral oil : HVI (15, 22, 32, 46, 68, 100) Hydraulic S1 – Mineral oil : Standard (46,68)