Moderately high alkaline reserve (30 Base
Number) trunk piston engine oil (TPEO) designed for use in high
specific output medium-speed trunk piston engines burning residual
fuels (up to 4.0% sulfur). Particularly suited to high load factor
operations in marine or stationary service and where heavy residual
fuels with high asphaltene content (vis broken residue) are
Taro 30 DP oils are available in SAE grades 30 and 40.
Medium-speed trunk piston engines including latest designs in
stationary power generation, especially in high load factor
Medium-speed trunk piston engines in marine service
High alkalinity levels control cylinder liner wear effectively and
protect bearings from corrosion. High-performance antiwear
additives provide excellent protection against adhesive wear for
cams, camshaft and bearings. Taro 30 DP also provides a high degree
of water tolerance and antifoam protection.
Keeps crankcase and oil control rings clean. Prevents deposit
formation throughout the engine. Reduces lube oil filter blockage.
Effectively handles insolubles.
Oxidation inhibitors protect the oil against thermal stresses,
protect engine parts from corrosion and reduce undercrown deposits
while promoting extended lubricant life.
Prevents corrosion of engine parts when engine is not in
Balanced Additive Combination
Provides minimum maintenance and downtime, long engine life and
Approved by major manufacturers for use in their medium speed
Base Number (BN) Selection
|Base Number, D2896, mg KOH/g
|Base Number, D4739, mg KOH/g
|Density at 15°C, kg/L
|Flash Point, COC °C
|FZG Fail Load Stage
|Pour Point, °C
|Sulfated Ash, %m
|Viscosity, cSt at 40°C
|Viscosity, cSt at 100°C
Manufacturer's lubricant recommendations must be matched to the
properties of the fuel and to the severity of the application. Use
of an oil with a BN lower than required can result in rapid
corrosive wear. Excessively high BN lubricants, relative to fuel
sulfur content, can result in ash deposit accumulation on exhaust
valves and result in possible valve distress.
Heavy residual fuels often have poorer combustion characteristics
due to their asphaltene content and can result in greater loading
of soot and unburned fuel in the lube oil. A higher detergency oil
has a greater ability to contain these materials and minimize the
formation of "black sludge" as well as piston deposits.
Active purification systems continuously remove combustion
contaminants from the oil, by use of centrifugal type separators
and automatic back flushing type filtration systems. As a
consequence, TPEOs are formulated to hold contaminants in
suspension while in the engine and reserve tank, but release them
in the purification system. At the same time, they must resist the
loss of detergent/ dispersant additives with the contaminants
whilst undergoing purification. Because of this, they are
formulated differently from automotive and railroad diesel engine
oils that are designed for systems without active purification.
Consequently, one type should never be substituted for the
As a result of the need for TPEOs to release their contaminants in
purification systems, the additive system must be extremely well
balanced. This "detergency balance" can be easily disturbed if
large amounts of top-up oil are added to a system oil containing a
higher than normal loading of contaminants, such as can occur with
faulty purifier operation. For this reason, it is recommended that
oil levels be maintained daily and not fall below 95% of nominal
In addition, top-ups with an oil of different detergent/dispersant
characteristics will very likely cause a disturbance in dispersancy
balance and will, therefore, require careful management of oil
Water can be centrifuged out with essentially no loss of additive.
However, water washing of the oil is not recommended.
In-Service Oil Analysis
Wherever possible, oil analysis should be carried out on a regular
basis to determine when change-out of the oil should occur, in
accordance with the manufacturer's guidelines
ENVIRONMENT, HEALTH AND SAFETY
Users should consult the MSDS, follow the precautions outlined and
comply with all laws and regulations concerning its use and
disposal. Used packaging material should not be incinerated or
exposed to flame. After use, protect your environment. Do not
pollute drains, soil or water with used product.
For further information on Caltex products and services call the
Lubelink Advisory Service on 1300 364 169 between 8.00 am and 6.00
pm (EST) Monday to Friday.
All reasonable care has been taken to ensure that the information
contained in this publication is accurate at the time of printing.
However, the information is liable to variation in the event of
subsequent changes in the blend, formulation, method of storage,
improper handling and usage etc.