Yanmar BY Series Service Manual page 33

Engine Oil
12/05
Engine Oil Viscosity
Select the appropriate engine oil viscosity based on
the ambient temperature shown in the SAE Service
Grade Viscosity Chart (Figure 3-11).
Figure 3-11
0W-30
5W-30
0W-40
5W-40
-4°F 14°F 32°F 50°F
(-20°C) (-10°C) (0°C) (10°C) (20°C) (30°C) (40°C)
Figure 3-11
Note: Yanmar recommends using genuine
Yanmar Marine oil, specifically
formulated for the BY2 engine. See
Acceptable Engine Oil on page 3-16.
NOTICE: If the equipment will be operated at
temperatures outside the limits shown, special
lubricants or starting aids must be used.
BY Service Manual
122°F
68°F 86°F 104°F
(50°C)
0000005B
© 2009 Yanmar Marine International
GENERAL SERVICE INFORMATION
3-15