Quality Oil

Heavy-Duty Engine Oil; Onus, SAE-20W50, API: SL/CF-4

Onus, SAE-20W50, API: SL/CF-4 is an all year round engine oil operates in all models. According to the lab report, it exceeds API: SL/CF-4 standard and meets the OEM requirements for most of the European Engines. This is a very good product for your heavy-duty engine.

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Onus, SAE 20W-50 API SL/CF-4

Product Description

Onus, SAE-20W50, API: SL/CF-4 is a specially formulated super grade diesel and gasoline lubricant for all types of passenger cars, vans and light duty trucks under extremely severe driving condition all through the year. This oil is blended from high quality hydrocracked base oil incorporated with effective additives. It is designed to meet the most severe requirements of modern high-performance as well as old models’ engines.

It contains superior quality detergent /dispersants, anti-oxidation, anti-corrosion properties. Special attention is given to quality reserve to keep the engine safe even with extended oil drains. It contains a superior stable viscosity index improver that doesn’t shear under severe operating conditions of high load and elevated temperature. This oil is recommended to use in gas-fueled (LPG, CNG & LNG) SI engines where conventional motor oils are recommended.

Performance Level


  • Excellent oxidation protection.
  • Provides excellent protection against engine wear.
  • Minimizes varnish and sludge.
  • High level of detergent/dispersant keeps engine clean.
  • Remarkable low oil consumption and better fuel economy.
  • All year-round usability.
  • Sweet strawberry fragrance with dyed in Red.

Typical Results

ASTM Color ASTM D 1500 Red
Density at 30°C gm/ml ASTM D 4052 0.8712
Kinematic Viscosity at 40°C ASTM D 445 17.78
Viscosity Index ASTM D 2270 134
Pour Point ASTM D 97 -20
Flash Point ASTM D 92 254
TBN ASTM D 5984 7.8


Mercedes-Benz 229.1

Why Use Sigma 'Onus, SAE-20W50, API: SL/CF-4 Oil for Your Engines

Our Heavy-Duty engines developed through the advanced technology that protects the engine from wear and drain while providing a sustainable performance.
Our engine oils reduce the oil consumption of the engines, making it more acceptable for the economic standard.
Our engine oils have all year round usability. Regardless of the weather or situation, our engine oil will draw the most out of your vehicle.
Our heavy-duty engine oils produce less waste than the market competitors. It retains your engine health and keeps it clean.