Purpose and Specifications

WOLF EXTENDTECH 75W80 GL 5 is a tough transmission oil built for gearboxes facing high speeds, heavy shock loads, and strong torque at low speeds. It delivers extreme-pressure protection for hypoid gears, spiral bevel gears, worm wheels, and most transaxles in cars and light trucks.

This budget-friendly 20L option from WOLF excels in real-world driving with smooth shifting, strong anti-wear defense for longer gear life, and resistance to breakdown that stretches oil change intervals up to 100,000 km or 3 years under normal conditions. It flows easily down to -45°C for cold starts and holds thick in heat up to 150°C, shielding against rust, corrosion, and oxidation.

• Smooth shifts reduce gear grinding during quick changes.
• Longer life for transmissions in daily commuters and heavy haulers.
• Extended drain means fewer shop visits and lower costs.

When to Use / Replace?

Use this oil in manual transmissions and differentials calling for API GL-5, MIL-L-2105C, or MIL-L-2105D specs. Perfect for older vehicles, trucks, or off-road use where gears take a beating.

Replace every 80,000-120,000 km or every 24-36 months, or sooner if towing heavy loads, driving in extreme heat over 40°C, or dusty conditions. Check fluid level monthly; change if dark or burnt-smelling. Shelf life is 5 years unopened in cool, dry storage.

FAQ

Is WOLF EXTENDTECH 75W80 GL 5 safe for my car's differential?
Yes, it's designed for hypoid axles and differentials under high stress, providing reliable protection without harming yellow metals.

Can I mix it with other gear oils?
Best to fully drain and refill with this oil alone for peak performance, though it's backward compatible with GL-4 in a pinch.

How much for a full transmission flush?
A typical car gearbox holds 2-4 liters; this 20L pail covers multiple vehicles or bulk service.