Synthetic oil
You should use synthetic engine oil that meets the same requirements given for conventional engine oil. When using synthetic oil, you must use oil of the same classification, viscosity and grade shown in this Owner’s Manual. Refer to “Engine oil” F12-5. Also, you must follow the oil and filter changing intervals shown in the Warranty and Maintenance booklet.
NOTE
Synthetic oil of the grade and viscosity noted in chapter 12 is the required engine oil for optimum engine performance.
Conventional oil may be used if synthetic oil is unavailable.
See also:
Maintenance tips
Some clips and fender linings must be removed before replacing the air cleaner
elements or specific bulbs. ...
Unleaded gasoline
The neck of the fuel filler pipe is designed to accept only an unleaded gasoline
filler nozzle. Under no circumstances should leaded gasoline be used because it
will damage the emission control sy ...
Limited slip differential (LSD) (STI)
The LSD provides optimum distribution of power according to the difference in revolutions between the right and left wheels that may be caused by certain driving conditions, thereby improving driving ...
