شرکت تامین روانکار ایرانیان

شرکت نفت شل، (به انگلیسی: Shell Oil Company) شرکت نفت و گاز آمریکایی و شعبه کمپانی رویال داچ شل در ایالات متحده آمریکا می‌باشد.این شرکت در زمینه استخراج نفت و گاز طبیعی، بازاریابی فرآورده‌های نفتی، همچنین تولید محصولات پتروشیمی فعالیت می‌کند.شرکت نفت شل، با در اختیار داشتن بیش از ۲۵٫۰۰۰ جایگاه پمپ بنزین در ایالات متحده، مالک بزرگترین شبکه عرضه سوخت در این کشور می‌باشد. شمار کارکنان این شرکت حدود ۲۲٬۰۰۰ نفر است و دفتر مرکزی آن در هیوستون، تگزاس قرار دارد.

 

Shell Argina XL

Medium-speed trunk-piston diesel engine oil

Argina XL is an extra-high performance oil for low oil consumption engines burning high sulphur residual fuel, in diesel power generation or marine propulsion.

Applications

medium-speed engines, used in power generation and marine propulsion, where oil consumption is low and high sulphur fuel is in use.

  especially suitable for engines fitted with “anti-polishing”, “flame” , or “fire” rings.

Medium-speed engines burning residual fuel need very specialised lubricants.  Heavy fuels contaminate the oil with asphaltenes,  requiring special types of detergency to avoid sludges. The combustion of high sulphur fuels produces sulphur acids, which cause high wear rates of piston rings and cylinder liners unless neutralised by a high basicity reserve in the oil. The oil is in service for very long periods, so centrifugal separators are used to remove water and combustion contaminants from the oil. Medium-speed engine oils must be specially designed to release these contaminants in the separator.

Modern engines are more demanding than ever. Oil consumption has been drastically reduced by the use of  “flame” or “anti-polishing” rings. Lower oil consumption reduces the rate of  renewal of the oil through top-up. This means that the average age of the oil charge is far greater than it used to be. Consequently the oil  is exposed for much longer than before to the stresses of high temperatures, contamination and acid combustion by-products. Argina XL  has been specially designed for these conditions.

Note: Due to its high base number, this oil has a high ash content. To avoid excessive ash deposits, do not use with low sulphur fuels, or engines with high oil consumption.

Performance Features

excellent engine cleanliness

    Higher detergency than even Argina X, leading to exceptionally clean crankcase, valve deck and pistons, including the critical piston undercrown area.

very high oxidation resistance

    Longer oil life and greater resistance to oxidative thickening.

extra high Base Number (50)

    Longer oil life in engines where life is limited by  depletion of Base Number (BN). In many cases a satisfactory equilibrium BN level can be maintained, in conditions where this would be impossible with a 40BN oil.

very good Base Number retention

   Resists secondary loss of Base Number due to oxidation.

  full compatibility with Argina family

   Argina XL can be used to top up engines already running on any other member of the Argina family, giving immediate control of  BN  without the need for an oil change.

Performance Specifications

Easily surpasses the engine test criteria for API CF

Approved by Wärtsilä Diesel for all engine types

Typical Physical Characteristics

Argina XL SAE  ۴۰
Kinematic Viscosity
      @  ۴۰°C, cSt ۱۳۹
      @ ۱۰۰°C, cSt ۱۴٫۴
Viscosity Index ۱۰۵
Density @ 15°C, kg/l ۰٫۹۲
Flash Point, Closed Cup,°C ۲۲۹
Pour Point, °C -۱۸
TBN-E, mg KOH/g ۵۰
Calcium, %wt ۱٫۸
 Zinc, %wt ۰٫۰۴
These characteristics are typical of current production. While future production will conform to Shell’s specification, variations in these characteristics may occur.

Health & Safety

Argina XL is unlikely to present any significant health or safety hazard when properly used in the recommended application, and good standards of industrial and personal hygiene are maintained.

Avoid contact with skin.  Use impervious gloves with used oil.  After skin contact, wash immediately with soap and water.

For further guidance on Product Health & Safety refer to the appropriate Shell Product Safety Data Sheet.

Protect the environment

Take used oil to an authorised collection point.  Do not discharge into drains, soil or water