Purpose and Specifications

Keep your automatic transmission shifting smoothly with WOLF EXTENDTECH ATF D II 20L, a budget-friendly mineral oil built for heavy-duty trucks, buses, and older vehicles. This high-quality fluid meets key specs like Allison C4, Caterpillar TO-2, GM Dexron II D, MB 236.5, MB 236.7, VOITH TURBO H55.6335.xx, and ZF TE-ML 03D/04D/11A/14A/17C, making it perfect for automatic transmissions, torque converters, power steering, and hydraulic systems.

Its high viscosity index means it flows easily in cold starts down to -39°C for quick protection, while staying thick under extreme heat to prevent wear. Enjoy extended transmission life thanks to superior anti-wear additives, chemical stability that fights oxidation, and resistance to sludge buildup for cleaner operation. Expect long drain intervals up to 100,000 km or 24 months in normal conditions, reducing downtime and costs.

When to Use / Replace?

• Use in older vehicles or fleet trucks needing Dexron II D spec for reliable performance in tough conditions, from city stop-go to highway hauls.
• Ideal for transmissions operating in temps from -30°C to +150°C, providing year-round protection.
• Replace every 80,000-120,000 km or 18-24 months, or sooner if towing heavy loads or in dusty/hot climates. Shelf life is 5 years unopened.

FAQ

Is this oil suitable for my classic truck's automatic transmission?
Yes, if it requires Dexron II D or matching ZF/MB specs, it delivers proven anti-wear protection and smooth shifts for vehicles pre-2000.

How often should I change the ATF in heavy use?
Change every 80,000 km or 18 months for towing or off-road; monitor fluid color and level monthly.

Can it handle cold winters?
Absolutely, pours at -39°C and protects instantly at startup, preventing dry shifts in freezing weather.