LeSabre V6-231 3.8L VIN A 2-bbl (1984)
containers of the oil they select for use in their cars. These are examples of the symbol:
The symbol has an upper segment, center area, and lower segment. An explanation of the information in each of these locations is as follows:
UPPER SEGMENT:
QUALITY LEVEL
API (American Petroleum Institute) Service Categories
Gasoline Engines
Diesel Engines
SF/CC
SF/CD (preferred)
SF/CD
SF/CC
SF
CENTER AREA:
OIL THICKNESS (Grade)
SAE (Society of Automotive Engineers) Viscosity Classification
Gasoline Engines
Diesel Engines
^
SAE 5W-30 (preferred for ^ SAE 30 (preferred above engines of 2.8 liters or less) freezing*).
^
SAE 10W-30 (preferred for ^ SAE 10W-30 and SAE 15W-40 all other engines). (acceptable for all engines; use only
for cold-weather
^
SAE 15W-40, SAE 20W-20 and operations; helps starting). SAE 30 (acceptable for all engines). * Except for 1.8
and 2.2 liter
diesels, where SAE 10W-30 is preferred at all temperatures.
LOWER SEGMENT: FUEL ECONOMY RATING
"ENERGY CONSERVING"
Oils with these words provide more miles per gallon of fuel.
*****************************************************************************
The Goodwrench line of engine oils recently introduced by GM meets these standards and provides proper lubrication protection for passenger cars.
