EAL (environmentally acceptable lubricant) hydraulic fluid specially developed for vessel stern tubes. It is also suitable for any application where a VGP (Vessel General Permit) 2013 legislation compliant biodegradable product is required. The product has an excellent protection against rust and corrosion and good oxidation stability, water separability and foam suppression. Moeve Sterna Bio exhibits a high viscosity index that remains stable over the time and which allows for operation over a wide temperature range. It is particularly recommended when there is a risk of water contamination in hydraulic systems working in severe operating conditions. The product is fully compatible with the typical elastomers used in hydraulic equipments.