About Iranol SEA 40

Iranol SEA 40 is a high-performance single-grade marine diesel engine oil (SAE 40) formulated using high-quality mineral base oils and advanced additive technology. It is specifically designed for medium-speed trunk piston diesel engines operating on residual or distillate fuels, commonly used in marine vessels, power plants, and industrial engines.

The oil provides excellent protection against wear, corrosion, and deposits, ensuring reliable engine performance under severe operating conditions, including high temperatures, heavy loads, and fuel contamination.

Key Specifications (Typical)

(Values are typical for SAE 40 marine oils)

• Viscosity Grade: SAE 40
• Base Oil: Mineral
• Application Type: Trunk piston diesel engines
• API Level: Typically API CF (or equivalent)
• TBN (Total Base Number): Medium (approx. 1030 depending on variant)
• Operating Temperature Range: approx. -15C to 100C
• Fuel Compatibility:
  • Heavy fuel oil (HFO)
  • Marine diesel oil (MDO)

Applications

Iranol SEA 40 is used in:

Marine Industry

• Medium-speed marine diesel engines
• Main propulsion engines
• Auxiliary engines & generators

Power Generation

• Diesel generator sets using heavy fuel

Industrial Use

• Stationary diesel engines
• Engines operating under continuous heavy load

Suitable for engines working in coastal, river, and offshore environments

Functions

Iranol SEA 40 performs several critical functions inside the engine:

1. Lubrication

• Forms a protective oil film between moving parts
• Reduces friction and metal-to-metal contact

2. Cooling

• Helps dissipate heat generated during combustion

3. Cleaning (Detergency & Dispersancy)

• Keeps engine parts clean by preventing sludge and soot deposits

4. Neutralization

• Neutralizes acidic by-products from fuel combustion

5. Sealing

• Improves sealing between piston rings and cylinder walls

Benefits

Engine Protection

• Strong anti-wear additives protect pistons, liners, and bearings

Deposit Control

• Prevents sludge and carbon build-up, keeping engine clean

Corrosion Resistance

• Neutralizes acids reduces corrosion damage

Water Separation

• Good demulsibility helps separate water contamination

Thermal Stability

• Resists oxidation at high temperatures longer oil life

Reliable Performance

• Maintains viscosity under heavy load and high temperature

Reduced Maintenance

• Cleaner engine longer service intervals

Summary (Simple)

Iranol SEA 40 is a robust marine diesel engine oil designed for heavy-duty marine and industrial engines, offering:

• Strong protection
• Clean engine operation
• Stability in harsh marine conditions