Mobil Delvac XHP Extra 10W-40 Diesel Engine Oil

Purpose and Specifications

Mobil Delvac XHP Extra 10W-40 is a synthetic diesel engine oil engineered for modern, high-performance diesel engines operating in severe on and off-highway conditions. The 10W-40 viscosity rating means it flows easily in cold starts (winter rating 10) while maintaining protective thickness at high engine temperatures (summer rating 40).

Key Performance Benefits:

• Extended Oil Drain Intervals: Engineered to allow the longest recommended oil drain intervals in modern diesel engines, reducing maintenance frequency and downtime.
• Superior Engine Protection: Outstanding protection against oil thickening, high-temperature deposits, sludge buildup, and corrosion. Reduces engine scuffing and bore polishing wear.
• Cold Start Performance: Excellent low-temperature fluidity ensures improved pumpability and oil circulation during startup, protecting engine components from wear when cold.
• Thermal Stability: Maintains viscosity under heavy-duty, high-temperature operating conditions. Resists viscosity breakdown and reduces oil consumption in turbocharged and intercooled engines.
• Fuel Economy: High-performance base oils contribute to improved fuel efficiency.

Meets Major OEM Specifications: MACK EO-M+, MACK EO-N, MAN M 3277, MTU Oil Category 3, RENAULT RLD-2, VOLVO VDS-3, VOLVO VDS-2, ACEA E4, ACEA E7, API CF, API CH-4, API CI-4.

When to Use / Replace?

Recommended For: Heavy-duty diesel trucks, commercial vehicles, and off-highway equipment with modern emission control systems. Suitable for both older and newer diesel engine models.

Oil Change Intervals: Follow your vehicle manufacturer's recommended service schedule. Modern diesel engines using this synthetic oil typically allow intervals of 40,000 to 60,000 km or 12 to 24 months, depending on driving conditions and OEM specifications. Severe driving conditions (frequent idling, dusty environments, towing) may require more frequent changes.

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

Storage: Store in a cool, dry location. Typical shelf life is 3 to 5 years when stored properly in sealed containers away from direct sunlight.

Frequently Asked Questions

Q: Can I use this oil in older diesel engines?
A: Yes. Mobil Delvac XHP Extra 10W-40 is engineered to provide exceptional performance in both modern diesel engines and older models, making it versatile across different engine generations.

Q: What does 10W-40 mean for my engine?
A: The '10W' indicates the oil flows easily in winter cold starts, protecting your engine immediately. The '40' means it maintains proper thickness at high operating temperatures. This range suits most diesel engines in temperate to warm climates.

Q: How does this oil help with fuel economy?
A: The synthetic base oils reduce internal engine friction, allowing your engine to work more efficiently. Over time, this can contribute to measurable fuel savings, especially in fleet operations.