Purpose and Specifications

Castrol Transmax Axle Long Life 15F148 is a full synthetic gear oil in 75W-90 viscosity, perfect for keeping manual transmissions, differentials, and transfer cases running smooth and strong. This 1-liter bottle delivers long-lasting protection with excellent wear resistance, ensuring gears stay lubricated even under heavy loads.

It flows easily in cold starts down to -40°C for quick protection and holds thick at high temps up to 150°C+, preventing breakdowns during tough driving. Approved for tough specs like MAN 342 S1 and ZF TE-ML standards, it cuts friction for smoother shifts and extends gear life in cars, trucks, and SUVs from 1968-2026.

When to Use / Replace?

Use this oil in manual gearboxes, axles, and differentials on vehicles like VW Golf, BMW 3 Series, and heavy-duty applications. Ideal for high-mileage rides or severe conditions like towing or off-road.

• Replace every 100,000-150,000 km or 5 years for normal driving to maintain peak performance.
• Change sooner at 60,000 km or 3 years if towing heavy loads, frequent short trips, or extreme temps.
• Shelf life: 5 years unopened in cool, dry storage.

FAQ

Is Castrol 15F148 suitable for my automatic transmission?
No, this is for manual transmissions, differentials, and transfer cases only - check your owner's manual for ATF if automatic.

Can I mix it with other gear oils?
Best to fully drain old oil first for maximum protection, but it's compatible with most GL-5 synthetics.

Does it work in cold climates?
Yes, the 75W rating ensures smooth flow at -40°C, protecting gears from wear on startup.