Environmentally Acceptable Saturated Synthetic Ester Gear and Bearing Fluid. Shell Naturelle S4 Gear Fluid is an advanced synthetic fluid for gearing applications such as thrusters and propulsion drives. Manufactured from fully saturated esters, it is designed to deliver superior load-carrying performance while meeting the requirements for Environmentally Acceptable Lubricants (EAL) as defined by the US EPA 2013 Vessel General Permit (VGP).
Applications
Marine propulsion drives, thrusters and controllable pitch propellers
Industrial gears, bearings and other components in circulated and splash lubricated systems
Performance & benefits
Lower Environmental ImpactAn ‘environmentally acceptable lubricant’ as defined by the US EPA 2013 Vessel General Permit (VGP). Offers reduced impact of leaks or accidental spillage into aquatic and marine environments compared to conventional mineral gear oil thanks to their higher biodegradability (Publication EPA 800-R-11-002) At least 90% by mass of this lubricant's components are readily biodegradable, achieving a passing result of ≥60% according to OECD 301B. Particularly suited for applications mandating compliance with US EPA 2013 Vessel General Permit (VGP) requirements for environmentally acceptable lubricants.
High viscosity indexProvides a shear stable lubricant which helps to protect components over a wide temperature range.
Longer service lifeFully 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 protectionShell Naturelle S4 Gear Fluid 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 efficiencyShell Naturelle S4 Gear fluid 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.
Standards & approvals
ISO 3448 VG 68 / 100 / 150
ISO 3448 — grades VG 68, 100 and 150
ISO 3448 viscosity grades rather than a performance norm: the number gives kinematic viscosity in mm²/s at 40 °C. The product is supplied in grades VG 68, VG 100 and VG 150.
ISO 14635 A20/8.3/90 >13
FZG test ISO 14635-1, load stage > 13
A test result rather than a norm: the FZG gear load-carrying test under A/20/8.3/90 conditions, which the oil passed beyond load stage 13 without scuffing.
DIN 51517-3 CLP E 68 / 100 /150
Industrial gear oil CLP E 68 / 100 /150 — DIN 51517, part 3
Ester-based EP gear oils to DIN 51517-3 in three viscosity grades. The ester base makes them biodegradable and heat-resistant.