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OK to put 89 octane in 330?

2560 Views 34 Replies 27 Participants Last post by  Double Vanos
Hey all, the manual says only put premium.. but cmon is it gonna make that big of a deal to put 89 in a 330?? I know in an M3 you would have to... what do you put in yours? Any problems with 89??
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Its your car, if you want decreased performance that will never allow teh car to work to its full potential. Sure then go ahead :rolleyes:
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