Fuel:
STI
The engine is designed to operate at maximum performance
using unleaded gasoline with an octane rating of 93 AKI (98
RON) or higher. If 93 AKI (98 RON) fuel is not readily available
in your area, unleaded gasoline with an octane rating of 91 AKI
(95 RON) may be used with no detriment to engine durability or
driveability. However, you may notice a slight decrease in
maximum engine performance while using 91 AKI (95 RON)
fuel. Use of 91 AKI (95 RON) fuel will not affect your warranty
coverage.
Except STI
Use unleaded gasoline with an octane rating of 91 AKI (95
RON) or higher. If 91 AKI (95 RON) fuel is not readily available,
unleaded gasoline with an octane rating of 87 AKI (90 RON)
may be used.
