Purpose and Specifications

CASTROL Transmax Axle EPX 15F175 is a mineral-based transmission and axle fluid designed for heavy-duty manual transmissions, differentials, and axles in commercial and industrial vehicles. This 1-liter bottle contains 85W-90 viscosity fluid that maintains consistent thickness across a wide temperature range—flowing smoothly in cold conditions while staying protective at high operating temperatures.

The fluid meets multiple manufacturer approvals including MB 235.0, ZF TE-ML series (16C, 17B, 19B, 21A), and API GL-5 specifications, making it compatible with Mercedes-Benz, ZF, and other premium European transmission systems. The mineral oil formulation provides excellent gear protection and anti-wear performance, preventing metal-to-metal contact and extending component life.

When to Use / Replace?

Replacement Interval: Follow your vehicle manufacturer's service schedule, typically every 50,000 to 100,000 kilometers or annually for vehicles in severe-duty applications. Check your owner's manual for exact intervals.

Operating Temperature Range: This fluid performs reliably between -20°C and +90°C, making it suitable for year-round use in most climates.

Shelf Life: Store in a cool, dry location. Unopened containers remain effective for up to 5 years when stored properly away from direct sunlight.

When to Change: Replace the fluid if it appears dark, smells burnt, or shows signs of contamination. Regular changes prevent sludge buildup and maintain smooth shifting performance.

Frequently Asked Questions

• Is this fluid suitable for my vehicle? This product is designed for manual transmissions, differentials, and axles requiring MB 235.0 or ZF TE-ML approvals. Always verify your vehicle's specification in the owner's manual before purchasing.
• Can I mix this with other transmission fluids? No. Always drain the old fluid completely and refill with the same specification. Mixing different fluid types can reduce protection and damage your transmission.
• What does 85W-90 mean? The 85W rating ensures the fluid flows easily in cold weather (W = Winter), while the 90 rating means it maintains protective thickness at high engine temperatures. This balance protects your transmission year-round.