Purpose and Specifications

Castrol Transmax Axle Long Life 75W90 is a full synthetic gear oil designed for rear axles, differentials, and final drives in heavy commercial vehicles, BMW non-limited slip differentials, and trucks from MAN, Scania, and ZF. It meets API GL5 standards plus approvals like MAN 342 S1, ZF TE-ML 05A/12B/17B/19C/21A.

This oil flows smoothly at cold starts down to -40°C for instant protection, stays stable up to 150°C+ operating temps, and cuts friction for fuel savings and quieter rides. Expect extended drain intervals up to 200,000 km or 3 years in commercial use, reducing service stops and keeping gears clean longer.

• Superior wear protection under heavy loads like towing
• Smooth shifting and noise reduction for comfortable driving
• Longer component life with excellent heat control

When to Use / Replace?

Use in manual transaxles, gearboxes, transfer cases, and axles where GL5 oil is specified, especially for stop-start traffic, towing, or extreme conditions. Replace every 150,000-300,000 km or 24-36 months based on manufacturer guidelines; check fluid level/color every 10,000 km. Shelf life is 5 years unopened.

FAQ

Is this safe for my BMW differential? Yes, BMW specifically approves it for non-limited slip rear axles.

Can it handle winter towing? Absolutely, pumps easily at -40°C to protect gears from startup wear.

How long does it last in trucks? Up to 200,000 km drain intervals with proper use, per MAN/Scania/ZF specs.