Engine Oil; Engine Oil Specifications; Engine Oil Viscosity - Yanmar 2YM15 Operation Manual

BEFORE YOU OPERATE

ENGINE OIL

Engine Oil Specifications

NOTICE: Only use the engine oil
specified. Other engine oils may affect
warranty coverage, cause internal
engine components to seize and / or
shorten engine life. NEVER mix different
types of engine oil. This may adversely
affect the lubricating properties of the
engine oil.
Use an engine oil that meets or exceeds the
following guidelines and classifications:
• API Service Categories: CD or higher
TBN value: 9 or more
The oil must be changed when the Total
Base Number (TBN) has been reduced to
2.0.
TBN (mgKOH/g) test method: JIS
K-2501–5.2–2(HCI), ASTM D4739(HCI)
• Recommended SAE Viscosity: 10W30,
15W40. Engine oil 10W30 and 15W40
can be used throughout the year.
• NEVER use API Service Category CG-4
or CH-4 oils.
NOTICE:
1. Be sure the engine oil, engine oil
storage containers and engine oil
filling equipment are free of
sediment or water.
2. Change the engine oil after the first
50 hours of operation and then at
every 150 hours thereafter. See
Changing the Engine Oil on page
53.
3. Select the oil viscosity based on the
ambient temperature where the
engine is being operated. See the
SAE Service Grade Viscosity Chart
(Figure 5).
4. Yanmar does not recommend the
use of engine oil "additives."
26
Handling Engine Oil
1.
2.
3.

Engine Oil Viscosity

Select the appropriate engine oil viscosity
based on the ambient temperature shown in
the SAE Service Grade Viscosity Chart in
Figure 5.
NOTICE: If you intend to operate your
equipment at temperatures outside the
limits shown, you must consult your
authorized Yanmar Marine dealer or
distributor for special lubricants or
starting aids.
YM Series Operation Manual
© 2007 Yanmar Marine International
When handling and storing engine oil,
be careful not to allow dust and water to
contaminate the oil. Clean around the
filler port before filling.
Do not mix lube oils of different types or
brands. Mixing may cause the chemical
characteristics of the oil to change and
lubricating performance to decrease,
reducing the engine's life.
Engine oil should be replaced at the
specified intervals, regardless of the
engine's operation history. See
Periodic Maintenance Schedule on
page 48.
SAE 10W-30
SAE 15W-40
-4°F 14°F 32°F 50°F
(-20°C) (-10°C) (0°C) (10°C) (20°C) (30°C) (40°C)
Figure 5
68°F 86°F 104°F
0000005