Our Shell Naturelle range of biodegradable lubricants are approved by leading manufacturers for use in applications that have a potential oil-to-sea interface.
Shell Naturelle S4 Stern Tube Fluid 100 is a non-emulsifying synthetic fluid specifically developed for use in stern tubes. Manufactured from fully saturated esters, Shell Naturelle S4 Stern Tube Fluid 100 is designed to offer superior lubrication performance while also being readily biodegradable and having low ecotoxicity.