Purpose and Specifications

Castrol 160C3D Transmission Oil (ON EV Fluid W5) is a premium 5-liter bottle of high-performance fluid designed for electric vehicle transmissions and advanced drivetrains. It delivers exceptional protection against wear on gears and bearings, ensuring smooth shifting even in demanding conditions. This fluid maintains optimal thickness from -40°C cold starts for easy operation in winter to over 200°C high-heat loads, preventing breakdowns and extending transmission life up to 100,000 km with proper maintenance.

Key practical benefits include superior thermal stability to resist sludge buildup, reduced friction for quieter and more efficient power delivery, and compatibility with modern EV components for reliable performance. Shelf life is typically 5 years when stored properly in a cool, dry place.

When to Use / Replace?

• Use in electric vehicles and hybrids requiring ON EV Fluid W5 spec, or compatible premium transmission systems for everyday driving, towing, or high-mileage fleets.
• Replace every 60,000-100,000 km or 4-5 years, or sooner if towing heavy loads frequently or operating in extreme temperatures.
• Ideal for vehicles over 75,000 km to restore smooth shifts and stop minor leaks with built-in seal conditioners.

Frequently Asked Questions

Is Castrol 160C3D safe for my EV transmission? Yes, it's specifically formulated for EV drivetrains like those needing ON EV Fluid W5, providing anti-wear protection without harming sensitive electronics or seals.

How often should I change this transmission oil? Check your owner's manual, but generally every 60,000-100,000 km or 48 months for optimal protection and smooth performance.

Can it handle extreme weather? Absolutely, it flows easily at -40°C for cold starts and stays strong up to 200°C to prevent overheating during hot summers or heavy use.