Purpose and Specifications

Shell Spirax S4 ATF HDX (550073300) is a premium synthetic technology automatic transmission fluid designed to keep your heavy-duty truck and passenger car transmissions running smoothly under tough conditions. This 20-liter drum delivers exceptional wear protection, shear stability, and smooth shifting for maximum uptime and fuel efficiency.

• Approved for top brands: MAN 339 Type V2 & Z2, ZF TE-ML 03D/04D/14B/17C, Volvo 97341:39, Voith 55.6336, MB 236.93, DANA 22A-0001, DTFR 13C170, plus compatible with GM Dexron IIIG and Ford Mercon specs.
• Excels in extreme temperatures: Flows easily in cold starts down to -40°C for quick protection, stays thick and protective up to 150°C operating temps.
• Extends oil drain intervals up to 100,000 km or 24 months in fleet use, cutting maintenance costs and downtime.
• Shelf life: 5 years unopened when stored cool and dry.

When to Use / Replace?

Use Shell Spirax S4 ATF HDX in heavy-duty automatic transmissions for trucks, buses, and off-road equipment facing high loads, heat, or frequent stops. Ideal for fleets in construction, agriculture, and long-haul transport to boost efficiency and component life.

• Replace every 80,000-120,000 km or 18-24 months under severe duty (towing, dusty roads, high temps).
• Switch if shifting feels rough, slipping occurs, or fluid darkens/burns after 50,000 km.
• Perfect for winter ops with low-temp fluidity preventing startup wear.

FAQ

Is this ATF backward compatible with older Dexron/Mercon fluids?
Yes, it meets GM Dexron IIIG and Ford Mercon standards, making it a direct upgrade for smoother performance and longer life.

What's the benefit in hot climates?
Superior thermal stability resists breakdown up to 150°C, reducing oxidation and sludge for reliable shifting in summer heat or heavy loads.

Can I mix it with my current transmission fluid?
Best to fully drain and refill for optimal protection, but small top-ups are safe due to wide spec compatibility.