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20W-50 Diesel Engine Oil

Typical Properties

Property Typical Value Unit Notes
Viscosity @ 40 °C 140 – 160 cSt Kinematic viscosity
Viscosity @ 100 °C 18 – 22 cSt Kinematic viscosity
HTHS Viscosity @ 150 °C ≥ 3.5 mPa·s High-Temperature High-Shear viscosity for wear protection
Viscosity Index (VI) 120 – 130 Stability over temperature range
Pour Point –30 to –36 °C Lowest temperature at which oil still flows
Flash Point (COC) ≥ 230 °C Temperature at which vapors ignite
Total Base Number (TBN) 8 – 12 mg KOH/g Acid neutralization capacity
Sulfated Ash ≤ 1.0 % wt Ash from detergents/dispersants
Density @ 15 °C ~ 0.880 – 0.890 g/cm³ Oil mass per unit volume
Foam Tendency (Seq I–III) Pass Resistance to foaming under service conditions

Type
A heavy-duty, multi-grade diesel engine lubricant formulated with high-viscosity base oils and an advanced additive system to deliver robust protection under severe operating conditions.


Applications

  • Heavy-Duty Diesel Engines: Trucks, buses, construction machinery, and agricultural equipment.

  • Turbocharged & Naturally Aspirated Engines: Provides reliable protection whether under boost pressure or standard aspiration.

  • High-Load, High-Temperature Conditions: Ideal for engines operating under sustained high loads or in hot climates.


Key Benefits

  1. Enhanced Wear Protection
    Special anti-wear additives form a protective film over critical components—pistons, rings, bearings—minimizing metal-to-metal contact under high stress.

  2. Superior Thermal & Oxidation Stability
    Resists oil breakdown, sludge, and varnish buildup in high-temperature environments, extending oil and engine life.

  3. High HTHS Viscosity
    Maintains a strong lubricating film under high shear and temperature (HTHS ≥3.5 mPa·s), crucial for protecting bearings and camshafts.

  4. Acid Neutralization & Cleanliness
    Elevated Total Base Number (TBN 8–12 mg KOH/g) neutralizes combustion acids and disperses soot, keeping the engine internals clean.

  5. Cold-Start Performance
    The 20W grade ensures pumpability and protection at low ambient temperatures, reducing wear during start-up.

  6. Corrosion & Rust Inhibition
    Inhibitors guard against moisture-induced corrosion, especially important for equipment stored or operating in humid environments.


Formulation

  • Base Oils: Blend of premium mineral or synthetic oils selected for high film strength and shear stability.

  • Additives: Detergents, dispersants, anti-wear agents (ZDDP), antioxidants, corrosion inhibitors, defoamants, and pour-point depressants.


Meets or Exceeds

  • API CH-4 / CI-4 / CK-4 (depending on specific formulation)

  • ACEA E7 / E9 (European heavy-duty diesel standards)

  • OEM approvals from leading engine manufacturers (e.g., Cummins, Caterpillar, Volvo, MTU).


Packaging

Available in 1 L, 5 L, 10 L, 20 L, and 205 L containers to suit workshop, fleet, and industrial requirements.

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