Shell Spirax S4 ATF HDX
Shell Spirax S4 ATF HDX is a premium automatic transmission fluid developed using advanced synthetic technology base oils to deliver superior performance in a wide range of heavy-duty and passenger vehicle transmission systems. The lubricant is designed to provide smooth shifting performance, excellent wear protection and extended service life even under severe operating conditions. Its balanced formulation ensures reliable operation across a broad range of temperatures and operating environments, making it suitable for modern automotive driveline systems.
One of the key advantages of Shell Spirax S4 ATF HDX is its advanced synthetic base oil technology. The use of high-quality synthetic base fluids provides outstanding viscosity stability and excellent low-temperature fluidity. This allows the lubricant to flow quickly during cold starts, ensuring rapid lubrication of critical transmission components while maintaining stable viscosity at high operating temperatures. As a result, the oil supports reliable transmission performance in both cold and hot operating conditions.
Shell Spirax S4 ATF HDX also delivers excellent shift performance and driving comfort. The carefully engineered friction characteristics help ensure smooth engagement of transmission clutches and bands, allowing gear shifts to occur smoothly and consistently. This helps reduce shift shock and improves overall transmission responsiveness, contributing to a more comfortable and efficient driving experience.
Another important benefit of Shell Spirax S4 ATF HDX is its exceptional wear protection. The advanced additive system helps protect gears, bearings and hydraulic components from wear and surface damage under demanding operating conditions. By maintaining a strong lubricating film between moving components, the lubricant helps extend the service life of critical transmission parts and supports reliable long-term operation.
Shell Spirax S4 ATF HDX also offers excellent resistance to oxidation and thermal degradation. Automatic transmission fluids can be exposed to high temperatures and mechanical stress during operation. The formulation’s high oxidation stability helps maintain fluid integrity and prevents the formation of harmful deposits that could affect transmission performance. This contributes to longer oil drain intervals and improved reliability of transmission systems.
The lubricant is suitable for a wide range of automotive applications including automatic transmissions in heavy-duty trucks, buses and passenger vehicles. It can also be used in certain manual transmissions, automotive hydraulic systems and power steering systems where an automatic transmission fluid is specified. The product meets numerous industry and OEM specifications including ZF TE-ML 03D, 04D, 14B and 17C, MAN 339 Type Z2 and V2, MB-Approval 236.93, Volvo 97341:39 and Voith 55.6336.XX. It also meets the requirements of Ford MERCON®, General Motors Dexron® IIIG and Allison C-4. Physical characteristics include a kinematic viscosity of approximately 37.0 mm²/s at 40°C and 7.6 mm²/s at 100°C with a viscosity index of approximately 180. The oil has a density of approximately 847 kg/m³ at 15°C, a flash point of approximately 180°C and a pour point of approximately –48°C, supporting reliable lubrication performance across a wide range of operating conditions.
