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KOYOTO MARINE GUARD 40 SERIES

KOYOTO MARINE Guard 40 series is a range of high performance 40 TBN marine diesel engine oils formulated with premium quality base stocks and high performance additive detergent technology to ensure optimum performance and protection for highly rated trunk piston engines. They are designed to operate efficiently in severe residual-fuelled medium-speed diesel applications found in marine and stationary power industries. These TPEOs provide outstanding residual fuel compatibility and excellent engine cleanliness, especially in crankcase, camshaft areas, ring belt and piston under crowns operating under severe conditions.

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KOYOTO MARINE Guard 40 series is a range of high performance 40 TBN marine diesel engine oils formulated with premium quality base stocks and high performance additive detergent technology to ensure optimum performance and protection for highly rated trunk piston engines. They are designed to operate efficiently in severe residual-fuelled medium-speed diesel applications found in marine and stationary power industries. These TPEOs provide outstanding residual fuel compatibility and excellent engine cleanliness, especially in crankcase, camshaft areas, ring belt and piston under crowns operating under severe conditions.

Features & Benefits

  • Excellent oxidation & thermal stability reduces deposits formation in piston under crown and ring belt areas.
    Outstanding protection against ring and liner wear.
  • Excellent protection from rust and corrosion even in presence of water.
  • Excellent oil filtration and centrifuging capabilities.
  • High detergency & low dispersancy capabilities, ensures engine cleanliness and releases contaminants & water readily in centrifugal separators.
  • High TBN reserves & retention, gives rapid neutralization of strong acidic combustion products and provides long term protection against corrosive wear of ferrous & non-ferrous metals.

Applications

  • Suitable for lubricating Medium-speed Trunk piston engines in industrial or marine propulsion and auxiliary engines on deep sea vessels, burning on residual fuel oils with sulfur levels of 1.5% to 3.5%.
  • Suitable for use in the latest model medium speed diesel engines operating with low cylinder liner temperatures.
  • Marine engine reduction gears, stern tubes & bearings and certain other ship-board applications.

Characteristics

Specifications KOYOTO MARINE Guard 40 series meets or exceeds following International and Builder specifications:

  • API CF

Typical Characteristics

KOYOTO MARINE Guard Test Method Units 4030 4040 4050
SAE Grade — — 30 40 50
Density @ 15 0C ASTM D 4052 gm/cc 0.892 0.900 0.904
Viscosity @ 100 0C ASTM D 445 cSt 11.6 14.6 19.2
Viscosity @ 40 0C ASTM D 445 cSt 103 145 218
Viscosity Index ASTM D 2270 – 100 99 99
Pour Point ASTM D 97 °C -9 -9 -9
Flash Point (COC) ASTM D 92 °C 245 268 276
Total Base Number ASTM D 2896 mg KOH/g 40.0 40.0 40.0
Sulphated Ash ASTM D 874 wt% 4.8 4.8 4.8

The above figures are typical of blends with normal production tolerance and do not constitute a specification.

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