Purpose and Specifications

WOLF EXTENDTECH 75W90 GL 5 is a semi-synthetic transmission oil designed for heavy-duty gearboxes, differentials, and hypoid axles in high-power cars, SUVs, and all-wheel drive vehicles. Its 75W90 viscosity grade flows smoothly at cold starts down to -45°C and stays thick under extreme heat up to 185°C, delivering smooth gear shifts, anti-wear protection for longer transmission life, and extended oil service intervals up to 100,000 km or 5 years under normal conditions.

When to Use / Replace?

Use this oil in manual transmissions, rear differentials with limited-slip mechanisms, and transfer cases requiring API GL-5 or MIL-L-2105C specs. Replace every 60,000-100,000 km or 3-5 years, or sooner if towing heavy loads, off-roading, or operating in temperatures over 100°C. Shelf life is 5 years when stored cool and dry.

• Smooth shifting: Reduces gear grind for effortless driving.
• Longer gear life: Protects against wear in high-pressure hypoid gears.
• Wide temp range: Performs from -45°C winters to 185°C track days.

FAQ

Is this oil safe for my limited-slip differential? Yes, its special additives ensure smooth operation in limited-slip diffs without chatter.

How often should I change it? Every 60,000-100,000 km or 3-5 years; check fluid color and level monthly.

What's the 20L pack good for? Perfect for workshops servicing multiple vehicles or large fleet differentials.