Engine Oil; Engine Oil Specifications - Yanmar 4BY2 Operation Manuals

ENGINE OIL

Engine Oil Specifications

Use a full-synthetic long-life engine oil that
meets or exceeds the following guidelines
and classifications:
Service Categories
• API Service Categories SM, SL, SJ, SH/
CF and CF
• ACEA Service Categories A3, B3 and B4
Definitions
• API Classification (American Petroleum
Institute)
• ACEA Classification (Association des
Constructeurs Européens d'Automobilies)
Note:
1. Be sure the engine oil, engine oil storage
containers, and engine oil filling
equipment are free of sediment and
water.
2. Change the engine oil after the first 50
hours of operation and then at every 250
hours thereafter.
3. Select the oil viscosity based on the
ambient temperature where the engine is
being operated. See the SAE Service
Grade Viscosity Chart.
4. Yanmar does not recommend the use of
engine oil "additives."
BY Series Operation Manual
Engine Oil Viscosity
Select the appropriate engine oil viscosity
based on the ambient temperature shown in
the SAE Service Grade Viscosity Chart
(Figure 2).
(-20°C) (-10°C) (0°C) (10°C) (20°C) (30°C) (40°C)
Note: Yanmar recommends using genuine
Yanmar Marine Oil specially formulated for
the BY engine. Contact your authorized
Yanmar dealer or distributor.
© 2008 Yanmar Marine International
BEFORE YOU OPERATE
0W-30
5W-30
0W-40
5W-40
10W-30
-4°F 14°F 32°F 50°F 68°F
Figure 2
122°F
86°F 104°F
(50°C)
0000005B
25