Purpose and Specifications

Mobil Delvac XHP ESP 10W40 is a full synthetic diesel engine oil designed for modern, high-performance, low-emission heavy-duty engines. The 10W40 viscosity grade means it flows easily in cold conditions (winter starts down to -20°C) while maintaining protective thickness at high operating temperatures (up to 100°C+).

This oil is engineered to work with modern emission control systems including Diesel Particulate Filters (DPF), EGR, SCR, and DOC systems. It meets strict specifications from major manufacturers: Volvo VDS-4.5, MAN M3775, Scania Low Ash, Cummins CES-20086, and API CK-4 standards.

Key Benefits

• Extended Engine Life: Superior protection against wear, oxidation, and corrosion reduces component damage and repair costs
• Better Fuel Economy: Advanced formulation reduces internal engine friction, improving fuel efficiency and lowering operating costs
• Longer Oil Change Intervals: Synthetic base oils and advanced additives allow extended drain periods, reducing maintenance frequency
• Engine Cleanliness: Prevents sludge and deposit buildup, keeping your engine running at peak performance
• Cold Start Protection: Excellent low-temperature fluidity ensures reliable engine cranking and lubrication in winter conditions
• Emission System Protection: Low ash, sulfur, and phosphorous levels protect DPF and other aftertreatment devices from clogging

When to Use / Replace?

Suitable for: Heavy-duty diesel trucks, construction equipment, mining vehicles, agricultural machinery, marine engines, and CNG/LNG vehicles operating in severe conditions.

Oil Change Intervals: Typically 40,000–60,000 km or 12 months, depending on your vehicle manufacturer's recommendations and driving conditions. Synthetic formulation allows longer intervals than conventional oils.

Operating Temperature Range: Performs reliably from -20°C (cold starts) to 100°C+ (sustained high-load operation).

Shelf Life: Store in a cool, dry place. Unopened containers remain stable for approximately 3–5 years.

Frequently Asked Questions

Q: Can I use this oil in my older diesel engine?
A: Yes. Mobil Delvac XHP ESP 10W40 is backward compatible with older heavy-duty diesel engines and meets API CH-4 and CI-4 standards, making it suitable for mixed fleets. However, always consult your vehicle's owner manual for the correct viscosity grade.

Q: Is this oil compatible with biodiesel?
A: Yes. This oil is biodiesel-compatible and provides excellent oxidation stability and piston cleanliness when used with biodiesel blends.

Q: Why is DPF protection important?
A: Modern diesel engines use Diesel Particulate Filters to reduce emissions. Low-ash oils like this one prevent filter clogging, maintaining engine efficiency and avoiding costly DPF regeneration or replacement.