Purpose and Specifications

WOLF EXTENDTECH 75W90 LS GL 5 1L is a full synthetic transmission oil designed for heavy-duty differentials, manual transmissions, and limited-slip axles. It delivers superior protection under high torque, high speed, and extreme pressure, keeping gears smooth, quiet, and cool during towing or off-road use.

This 1-liter bottle meets API GL5, MIL-L-2105 C, and MIL-L-2105 D standards, ensuring compatibility with trucks, cars, construction equipment, and marine lower units. Its limited-slip formula eliminates chatter for better traction, reduces operating temperatures by up to 10-20°C under load, and extends gear life with outstanding wear resistance.

• Flows easily at cold starts down to -40°C for quick protection
• Stays thick and strong up to 150°C+ in hot conditions
• Prevents rust, corrosion, and foaming for reliable performance

When to Use / Replace?

Use in rear differentials, manual gearboxes, and hypoid gears requiring GL5 oil, especially limited-slip types in trucks, SUVs, and heavy machinery. Ideal for severe service like towing heavy loads over 5000 km trips or daily off-highway work.

Replace every 50,000-100,000 km or 24-36 months under normal driving; halve intervals (25,000 km or 12 months) for towing, racing, or dusty conditions. Shelf life is 5 years unopened when stored cool and dry.

FAQ

Is this safe for my limited-slip differential? Yes, the built-in LS additives prevent chatter and ensure smooth clutch pack operation without extra modifiers.

Can I use it in cold climates? Absolutely, it pumps easily at -40°C, reducing startup wear even in freezing winters.

Does it improve fuel economy? Users report better mileage from reduced friction and drag, especially in 4WD vehicles.