Shell Naturelle S4 Stern Tube Fluid 100 209 L

High viscosity index

Provides a shear stable lubricant which helps to protect components over a wide temperature range.

Longer service life

Fully saturated esters ensure excellent resistance to oxidation and hydrolysis while offering high-temperature thermal stability. Shell Naturelle S4 Gear Fluid offers the potential to extend service intervals compared to conventional mineral gear oils. 

Load carrying and wear protection 

Shell Naturelle S4 Gear Fluid 100 is formulated to have excellent load carrying capacity and anti-scuffing performance. Advanced non-toxic additives provide protection over a wide range of conditions and ensure long component life, even under shock loading conditions.

Maintaining system efficiency 

Shell Naturelle S4 Gear fluid 100 has excellent water separation properties. Excess water can be easily drained from lubrication systems; which helps to extend the life of equipment and ensures efficient lubrication of contact areas.

Readily biodegradable 

Shell Naturelle S4 Gear Fluid 100 is biodegraded by over 60% after 28 days in the OECD 301 biodegradation test. 

Low toxicity towards the environment 

Reduced impact of accidental escape into the environment. Shell Naturelle S4 Gear Fluid is classified as ‘not harmful’ to bacteria, algae, freshwater and marine invertebrates, and fish when tested as water-accommodated fractions (WAFs) according to OECD and EPA test guidelines.

Recommended for use in environmentally sensitive areas

Shell Naturelle S4 Gear Fluid 100 is an ‘environmentally acceptable lubricant’ as defined by the USA EPA 2013 Vessel General Permit and offers reduced harm when used in marine environments compared to conventional mineral oils. Has a reduced environmental impact in the event of a leak or accidental spillage. It is particularly suited for use in environmentally sensitive areas. 

Compatibility & Miscibility 

Fluid Compatibility 

Shell Naturelle Gear Fluids are miscible with mineral oils. However, in order to ensure that the environmental properties and performance of Shell Naturelle Gear Fluids are maintained, the system should be drained and flushed thoroughly when changing fluids. 

Typical Physical Characteristics 

Owing to the surface-wetting properties of EAL’s, if the system previously contained mineral oil, deposits formed in the system during the previous operation may be loosened and accumulate in the system filters. The filters should, therefore, be checked at regular intervals, especially after change-over. 

It is strongly recommended that an oil sample is taken from the system following changeover and analysed via the Shell Rapid Lubricants Analysis service to confirm the new fluid charge is fit for use. 

Seal and Paint Compatibility 

Shell Naturelle Gear Fluids are compatible with seal materials and paints normally specified for use with conventional mineral oils. However, advice should be sought from your OEM confirming suitability for use of Shell Naturelle Gear Fluid in your specific application. Further information is also available from your local Shell technical help desk. 

If you have any questions, please contact OlieOnline Technical Helpdesk