Section 8. Specifications
Engine Oil
8-5
Engine Oil
Use these SAE viscosity grades.
Engine Oil Recommendations
American Petroleum Institute (API) classifications SM and SAE 5W-
30 for gas engines.
IMPORTANT
Do not extend oil change intervals from those specified
when using synthetic lubricants.
Fill crankcase with correct amount of oil. When adding oil between oil
changes, it is preferable to use the same brand as various oils may
be incompatible. Refer to the Maintenance and Lubrication Section
for recommended oil change intervals.
IMPORTANT
Do not overfill crankcase. Excess oil causes foaming and
can cause loss of lubrication and higher operating tem-
peratures, resulting in engine damage.
-40
-30
-20
-10
0
+10
+20
+30
+40
+50
SAE 10W
SAE 0W-30
SAE 5W-30
SAE 15W-40
SAE 10W-40
SAE 10W-30
SAE 40
SAE 30
SAE 20W
SAE 5W-40
SAE 20W-50
Summary of Contents for CGC40 L
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