Taro? Special HT LS 40
trademarks are the property of Chevron Intellectual Property LLC. All other trademarks are owned by
their respective companies.
Description
Taro Special HT LS 40 is a high-performance 40 BN SAE 50 cylinder lubricant particularly intended for lubricating the
cylinders of the latest generation slow-speed engines using low sulphur fuel (<1.5 to 2 wt% sulphur) and operating at
very high mechanical and thermal loads reaching up to 160 bar in maximum cylinder pressure and up to 270 degrees
Celsius in liner temperature at top dead center.
Taro Special HT LS 40 is blended from highly refi ned, paraffi nic base oils and carefully selected additives to provide
superior ring and liner wear protection and excellent piston cleanliness in slow-speed crosshead engines. Taro Special
HT LS 40 has been developed specifi cally for high-pressure and high-temperature applications.
Typical Characteristics
SAE Viscosity Grade 50
Code 001351
Base number, mgkOH/g 40
Density at 15°C, kg/l 0.92
Flash point, COC, °C 270
Pour point, °C –15
Sulphated ash, mass % 5.1
Viscosity, kinematic, mm2/s (cSt)
at 40°C 247
at 100°C 21.0
Viscosity index 100
Recommended Uses
Taro Special HT LS 40 is recommended for the cylinder lubrication of all slow-speed marine diesel engines
continuously using low sulphur fuel and operating at high specifi c power outputs and high thermal loads. Running on
low sulphur fuel requires the reduction of base introduced into the cylinder. This can be achieved by optimizing the oil
feed rate or selecting a diesel cylinder lubricant with a lower base number. Taro Special HT LS 40 has been approved
by MAN Diesel and W?rtsil?.
Performance Benefi ts
1. Wear Protection
Protects against excessive cylinder liner and piston ring
wear, thus allowing prolonged service intervals.
2. Detergent/Dispersant Properties
Prevents ring sticking and minimizes deposit formation
throughout the combustion chamber areas.
3. Excellent Lubrication Properties
Maintains an oil fi lm under severe, high load conditions,
thereby reducing frictional wear and preventing scuffi ng
of liners, pistons and rings.
4. Storage Stability
Completely stable at all ambient temperatures. Will not
separate or deteriorate in long -term storage.
5. Compatibility
Fully miscible and compatible with alkaline cylinder
lubricants generally known to the international
marine trade.
Taro? Special HT LS 40
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