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Petromin Petroshield Special

DESCRIPTION
Petromin Petroshield Special is high quality marine system oil, formulated from solvent-refined paraffin base oils having high thermal stability and resistance to oxidation. These inherent base oil characteristics are augmented by a balanced additive package containing oxidation inhibitors, alkaline detergents, dispersants and antifoam agents. They have been developed specifically for use as system oils in modern high-output cross-head type marine diesel engines. They provide adequate lubrication for bearings and other moving parts, including cams and gears, plus effective cooling of pistons in cross-head engines even in the presence of saline water.

APPLICATIONS

Petroshield Special are recommended primarily for use in high out-put cross-head diesel engines in marine service, particularly those requiring system oil for piston cooling. In these applications, they will prevent or reduce deposit formation in piston cooling spaces, maintain piston-cooling efficiency and reduce the incidence of piston crown cracking. Also it is recommended as crankcase oil in auxiliary engines.


BENEFITS

• Reduce deposits on piston and crankcase surfaces.

• Enhance piston-cooling efficiency.

• Increase protection against bearing corrosion.

• Provide improved rust protection.

• Provide effective water tolerance and separation.

PPERFORMANCE LEVEL

Approved by major marine
engine manufacturers
MAN B&W
MITSUBISHI HEAVY
INDUSTRIES (MHI)
WARTSILA NSD


 

PRODUCT CHARACTERISTICS

 

PROPERTIES

  UNITS VALUE TEST METHOD

SAE Grade

  - 30 40 -

Specific Gravity

@ 15 ºC - 0.896 0.899 ASTM D-4052

Viscosity

@ 40 ºC

mm2/s

108.0 153.0 ASTM D-445
  @ 100 ºC 

mm2/s

11.8 15.0 ASTM D-445

Viscosity Index

  - 98 98 ASTM D-2270

Flash Point, COC

  ºC 266 270 ASTM D-92

Pour Point

  ºC -6 -9 ASTM D-97

Base Number

  mg KOH/g 5.2 5.2 ASTM D-2896

Sulphated Ash

  % wt. 0.73 0.73 ASTM D-874

Product Code

  - 4100 4110 -

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