Suzuki: RON 97 and RON 98, research octane number, suzuki car

Question
My Suzuki car manual book recommended fuel type for my car is RON 98. But my country only selling RON97. Are RON 97 and RON 98 the same. If i using RON97 on my car, will it harm my engine?
Thank you.

Answer
The difference between RON(research octane number)97 and 98 is so small as to be negligible.  Many people at altitudes of 7000 or more feet successfully use fuel with a RON of 7 to 9 points lower.  If you live at sea level, in extremely hot climates, and drive very hard, you may want to consider a fuel additive to feel better about it, otherwise don't worry, it won't matter.
scotty