What type of fuel should i use for my 2002 honda accord v6 coupe?

I recently got a used 2002 honda accord v6 coupe and the previous owner told me she always put 91 gas. I wanted to know if i could use a lower level gas? And what would be the cons for using a lower octane gas?

95 octane is the highest fuel grade you can use for a standard car,98 octane is recommended for performance cars.What type of fuel should i use for my 2002 honda accord v6 coupe - 1

87 octane is what Honda recommends. Anything more is a waste of money.