Diesel Engine Oils API CF-4 15W40

About Diesel Engine Oils API CF-4 15W40

Ruhani Industries Diesel Engine Oil API CF-4 15W40 is a premium quality heavy-duty diesel engine lubricant specially formulated for high-performance diesel engines operating under severe conditions. It is blended with high-quality base oils and advanced additive technology to provide superior engine protection, improved cleanliness, excellent wear control, and enhanced thermal stability.

This multi-grade engine oil is designed to deliver reliable lubrication in both high and low temperature conditions, ensuring smooth engine operation, longer engine life, and reduced maintenance costs. API CF-4 15W40 is suitable for naturally aspirated and turbocharged diesel engines used in commercial vehicles, agricultural machinery, construction equipment, generators, and industrial applications.

The advanced formulation helps minimize sludge formation, piston deposits, oxidation, and corrosion while maintaining excellent viscosity stability during extended service intervals.

Applications

Ruhani Industries API CF-4 15W40 Diesel Engine Oil is recommended for:

• Heavy-duty diesel trucks and buses
• Construction and mining equipment
• Agricultural tractors and harvesters
• Diesel generator sets
• Fleet and transport vehicles
• Turbocharged and naturally aspirated diesel engines
• Industrial diesel engines
• Off-highway equipment operating in tough environments

Suitable for use in engines requiring:

• API CF-4 performance level
• SAE 15W40 viscosity grade

Technical Specifications

Typical values may vary slightly during production.

Key Benefits

Excellent Engine Protection

Provides strong protection against wear, scuffing, and metal-to-metal contact, extending engine life.

High Thermal Stability

Performs effectively under high temperature and heavy load operating conditions.

Improved Engine Cleanliness

Helps reduce sludge, varnish, and piston deposits for cleaner engine performance.

Better Oxidation Resistance

Minimizes oil thickening and maintains lubricant performance over long operating hours.

Enhanced Fuel Efficiency

Maintains optimum viscosity for smoother engine operation and improved fuel economy.

Superior Soot Handling

Controls soot-related thickening and wear in diesel engines.

Corrosion & Rust Protection

Protects vital engine components from rust and corrosion during operation and storage.

Extended Drain Capability

Supports longer oil drain intervals and reduced maintenance downtime.