Purpose and Specifications

Wolf Officialtech 75W140 LS GL-5 is a high-performance semi-synthetic transmission oil designed for all types of differentials, including limited-slip models. This oil is engineered to handle extreme loads in axles and reduction gears found in cars, trucks, and 4x4 vehicles.

The 75W140 viscosity rating means the oil flows easily in cold weather (winter protection at -51°C) while maintaining a protective thick film at high operating temperatures. This dual protection ensures smooth gear shifting without vibration and extends the life of your transmission components.

Key Performance Features:

• Exceptional viscosity stability across temperature ranges—stays protective whether your engine runs cold or hot
• Superior anti-wear protection that extends transmission and differential life
• Excellent thermal and oxidation stability, preventing oil breakdown under stress
• Smooth gear shifting with no vibration, thanks to advanced friction modifiers
• Works with limited-slip differentials without causing chatter or noise

Meets Industry Standards: API GL-5, MIL-L-2105C, MIL-L-2105D, BMW MSP/A, Ford WSS-M2C187-A, and GM specifications.

When to Use / Replace?

Replace your transmission oil every 40,000 to 80,000 kilometers (or every 2 to 4 years), depending on your vehicle manufacturer's recommendations and driving conditions. Severe driving—towing, mountain roads, or frequent short trips—may require more frequent changes.

Use this oil if your vehicle manual specifies GL-5 rated gear oil or if you own a BMW, Ford, or GM vehicle with a manual transmission or limited-slip differential. Always check your owner's manual for the exact specification your vehicle requires.

This 1-liter bottle is ideal for topping up or for smaller transmission systems. Store in a cool, dry place away from direct sunlight.

Frequently Asked Questions

Q: Can I use this oil in my limited-slip differential?
A: Yes. This oil is specifically formulated for limited-slip differentials and includes friction modifiers that prevent chatter and noise while protecting the differential mechanism.

Q: What's the difference between 75W140 and other viscosity grades?
A: The 75W means it flows like a 75-weight oil in winter cold, protecting your gears during startup. The 140 means it maintains the thickness of a 140-weight oil at high temperatures, protecting under extreme load. This makes it ideal for vehicles that experience both cold winters and hot operating conditions.

Q: Is this oil synthetic or mineral?
A: This is a semi-synthetic oil, which blends refined mineral oils with synthetic components. This gives you better protection than pure mineral oil at a lower cost than fully synthetic, making it a practical choice for most drivers.