Purpose and Specifications

WOLF GUARDTECH 10W40 B4 is a semi-synthetic engine oil designed for four-stroke gasoline and diesel engines in passenger cars and vans. This oil provides reliable protection for both normally aspirated and turbocharged engines, with special suitability for modern direct-injection diesel engines like Common Rail, HDI, and CDI systems.

Key Performance Features:

• Flows easily at cold temperatures (down to -39°C), ensuring smooth cold starts even in winter
• Maintains stable protection at high engine temperatures, protecting critical engine parts under stress
• Low ash formulation reduces deposit buildup inside the engine, keeping it cleaner longer
• Resists aging and oxidation, extending the oil's protective lifespan
• Reduces friction and wear, helping your engine run more efficiently

Meets Major Manufacturer Standards: FIAT 9.55535-D2, FIAT 9.55535-G2, MB 229.1, VW 501.01, VW 505.00, ACEA A3/B4, API SN/CF. Compatible with Euro 4 emission standards.

When to Use / Replace?

Replace this oil every 10,000 to 15,000 kilometers or every 12 months, whichever comes first. If your vehicle operates under severe conditions (frequent short trips, towing, or dusty environments), consider more frequent changes. This 5-liter container is ideal for one complete oil change in most passenger vehicles, with enough for a filter change and top-ups.

Operating Temperature Range: Safe for year-round use from -39°C winter conditions to 100°C+ engine operating temperatures.

Frequently Asked Questions

• Can I use this oil in my diesel car with direct injection? Yes. WOLF GUARDTECH 10W40 B4 is specifically formulated for direct-injection diesel engines and meets all required specifications for Common Rail, HDI, and CDI systems.
• Is this oil suitable for both petrol and diesel engines? Yes. While this B4 variant is optimized for diesel, it also works in gasoline engines. Check your vehicle manual for the correct viscosity grade.
• How long can I store this oil before using it? Store in a cool, dry place away from direct sunlight. Properly sealed containers maintain quality for several years, though using within 2-3 years of purchase is recommended.