Purpose and Specifications

LIQUI MOLY 4420 is a fully synthetic hypoid gear oil designed for differentials and final drives in cars. This 75W-140 GL-5 LS oil delivers top lubrication under extreme pressure, protecting gears from wear during towing, off-road use, or heavy loads.

It flows smoothly at cold starts down to -40°C and stays thick at high temps up to 150°C, reducing noise and ensuring smooth operation. The 500ml bottle fits precise refills, compatible with specs like ZF TE-ML 12D, Ford WSL-M2C192-A, and Scania STO 1:0.

• Key Benefits: Maximum wear protection, cuts transmission noise, excellent rust prevention, supports longest service intervals up to 100,000 km or 5 years.
• Shelf life: 5 years unopened in cool, dry storage.

When to Use / Replace?

Use in hypoid differentials for cars, trucks, and SUVs under severe conditions like high mileage or temperature swings. Replace every 60,000-100,000 km or 3-5 years, or sooner if you hear gear whine, notice leaks, or drive in dusty/hot climates.

Ideal for BMW rear axles, ZF transmissions, and Ford/Scania approvals - check your owner's manual.

FAQ

Q: Is this safe for limited-slip differentials?
A: Yes, the LS formula ensures proper friction for clutch-type limited-slip diffs without chatter.

Q: Can I mix it with regular gear oil?
A: Yes, it's compatible with mineral residues during changes, but full drain gives best results.

Q: What's the operating temperature range?
A: Performs reliably from -40°C cold starts to 150°C under heavy load.