Purpose and Specifications

WOLF GUARDTECH 80W GL-4 1L is a high-quality mineral-based gear oil designed for manual transmissions. It provides moderate extreme pressure protection, ensuring smooth gear shifts and long-lasting wear resistance for your vehicle's gearbox.

• Easy shifting: Reduces friction for effortless gear changes, even in daily driving.
• Superior wear protection: Shields gears and bearings, extending transmission life up to 100,000 km or 4 years under normal conditions.
• Corrosion prevention: Specially formulated to protect copper alloys and other sensitive parts from rust.
• Wide temperature range: Flows smoothly from -30°C in winter to 150°C under heavy load, maintaining consistent performance.
• API GL-4 and MIL-L-2105 approved: Meets strict standards for moderate-duty transmissions in cars, trucks, and older vehicles.

1-liter bottle is perfect for precise top-ups or complete changes in smaller gearboxes. Shelf life is 5 years when stored cool and dry.

When to Use / Replace?

Use this oil in manual transmissions requiring GL-4 specs, like many European cars from the 80s-2000s. Replace every 60,000-80,000 km or every 3 years, or sooner if you notice hard shifting, grinding noises, or leaks. Ideal for moderate towing or city driving where temperatures hit -20°C to 120°C regularly.

FAQ

Is WOLF GUARDTECH 80W GL-4 safe for my synchro gearbox?
Yes, its friction modifiers ensure smooth synchronization without aggressive wear, perfect for daily drivers.

Can I mix it with other GL-4 oils?
Best to fully drain and refill for optimal protection, but small top-ups with compatible GL-4 oils are fine.

What if I drive in extreme cold?
It pumps reliably down to -30°C, preventing stiff shifting on frosty mornings.