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regular 87 is fine. if it is a gs-r you want to put premium at least 91 octane
Yes. 87 octane regular is what the owners manual says to use
no!! dont be cheap and buy the the higher octane!!!!
" regular " unleaded , 87 octane
Yes.
" regular " unleaded - 87 octane
no
No. 91 octane is the minimum. I notice a huge difference in the way a Cadillac runs on 87. I always put 93 octane in Cadillac Fuel systems.
87 octane is sufficient.
Unleaded, at least 87 octane, using higher is cool but not necessarily better.
Yes you can. It will always be cheaper to just buy the 91 octane though so you'd be wasting your money.
87 octane