TP-6277 10/0314 Scheduled Maintenance
3.3 Lubrication System
3.3.1 Specifications
Use high quality detergent oil of American Petroleum
Institute (API) service class SG, SG/CC, or SG/CD.
Most oil containers display this information. See
Figure 3-1. The symbol illustrated identifies the API
service class in the upper portion. The center indicates
the Society of Automotive Engineers (SAE) viscosity
grade. The bottom portion (when used) signifies that the
oil is intended to improve fuel economy and displays the
phrase Energy Conserving. Select viscosity based on
the air temperature at the time of operation Use
Figure 3-2 for recommended SAE viscosity grades.
Figure 3-1 Oil Service Class and SAE Viscosity
Grade Symbol
Use of other than the appropriate service class oil or oil
change intervals longer than recommended could
cause engine damage which is not covered by the
engine warranty.
Do not mix different brands of oil. Incompatibility could
cause a breakdown of lubricating ingredients and
reduce engine protection.
Outside Temperature
SAE Viscosity
Grade (Single
Viscosity Oils)
-- 2 3 _C(--10_F) to 15_C(60_F) 10W
-- 1 2 _C(10_F) to 32_C(90_F) 20W-20
Above 0_C(32_F) 30
Above 10_C(50_F) 40
Outside Temperature
SAE Viscosity
Grade (Multi-
Viscosity Oils)
Below --12_C(10_F) 5W-20
Below 16_C(60_F) 5W-30
-- 2 3 _C(+10_F) to 32_C(90_F) 10W-30
Above --23_C(--10_F) 10W-40 or
10W-50
Above --7_C(20_F) 20W-40 or
20W-50
Figure 3-2 Recommended SAE Viscosity Grades
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