6.1
6
Section 6
Lubrication System
General
These engines use a splash lubrication system,
supplying necessary lubrication to the cranksha ,
camsha , connecting rod and valve train components.
Oil Recommendations
Using the proper type and weight of oil in the
crankcase is extremely important. So is checking oil
daily and changing oil regularly. Failure to use the
correct oil, or using dirty oil, causes premature engine
wear and failure.
Oil Type
Use high quality detergent oil of API (American
Petroleum Institute) service class SJ or higher. Select
the viscosity based on the air temperature at the time
of operation as shown in the following table. See
Figure 6-1.
NOTE: Using other than service class SJ, or higher
oil, or extending oil change intervals longer
than recommended can cause engine
damage.
A logo or symbol on oil containers identifi es the API
service class and SAE viscosity grade. See Figure 6-2.
5W-20, 5W-30
RECOMMENDED SAE VISCOSITY GRADES
°F -20 0 20 32 40 6050 80 100
°C -30 -20 -10 0 10 20 30 40
TEMPERATURE RANGE EXPECTED BEFORE NEXT OIL CHANGE
10W -30
Kohler 10W-30
SAE 30
Figure 6-1. Oil Viscosity Grades Table.
Figure 6-2. Oil Container Logo.
The top portion of the symbol shows service class
such as API SERVICE CLASS SJ. The symbol may
show additional categories such as SH, SG/CC, or
CD. The center portion shows the viscosity grade such
as SAE 10W-30. If the bo om portion shows “Energy
Conserving,” it means that oil is intended to improve
fuel economy in passenger car engines.
SAE
10W-30
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