Purpose and Specifications

LIQUI MOLY Hypoid Gear Oil GL5 SAE 80W-90 is a mineral-based transmission oil designed for manual transmissions and axle drives with hypoid gearing. This oil ensures smooth operation under extreme pressure and temperature swings, protecting gear teeth from wear while reducing transmission noise.

Key Performance Benefits:

• Protects gears under high-load conditions and extreme temperatures
• Maintains consistent thickness across cold starts and hot operation
• Reduces gear noise during acceleration and highway driving
• Resists breakdown from heat and oxidation, extending oil life
• Safe for all common sealing materials in your transmission

Technical Approvals: API GL5, MIL-L 2105 C/D, ZF TE-ML 16B/17B/19B/21A. Approved for Mercedes-Benz 235.0 and MAN 342 Typ M1 specifications.

When to Use / Replace?

Use this oil in manual transmissions and differentials that specifically require GL5 gear oil. Check your owner's manual for the exact viscosity grade your vehicle needs—this 80W-90 formula works in most climates.

Replacement Schedule: Most manual transmissions need gear oil changes every 40,000 to 80,000 km or every 3 to 5 years, whichever comes first. Some vehicles with sealed transmissions may go longer—always follow your manufacturer's service schedule.

Operating Temperature Range: This oil performs reliably from -20°C (cold winter starts) to +90°C (highway driving in summer heat).

Storage: Keep unopened bottles in a cool, dry place. Shelf life is typically 3 to 5 years when stored properly.

Frequently Asked Questions

Q: Can I mix this with other gear oils?
A: While this oil is compatible with other branded gear oils, mixing reduces effectiveness. Use it unmixed for best protection and performance.

Q: Is this suitable for limited-slip differentials?
A: No. This GL5 oil is designed for standard hypoid gears without limited-slip differentials. Check your vehicle's manual for the correct specification.

Q: How do I know if my transmission needs new oil?
A: Signs include grinding noises during shifts, difficulty engaging gears, or a burnt smell. Regular maintenance prevents these issues—follow your service schedule.