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Shell Spirax S6 TFVM is a premium, fully synthetic transmission fluid engineered specifically for modern heavy-duty automatic and tractor/equipment power-shift transmissions requiring specialized Voith and off-highway specifications. Formulated with advanced synthetic base stocks and optimized friction modifiers, it delivers exceptional oxidation resistance and thermal stability under extreme operating temperatures. The fluid maintains precise clutch engagement and anti-shudder performance, ensuring smooth shifting and reliable power transmission over extended drain intervals. Its superior shear stability and robust anti-wear chemistry protect gears, hydraulic pumps, and bearings against fatigue, pitting, and deposit formation. Typical physical parameters include a kinematic viscosity of 35.8 mm²/s at 40°C, 7.1 mm²/s at 100°C, a density of 845 kg/m³ at 15°C, a flash point of 210°C, and a pour point of -48°C. Supplied in a 20-liter pail for convenient fleet maintenance, it carries primary performance approvals for Voith H55.6335.xx (G607) and meets severe commercial transmission standards.