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Best grade of gasoline to use

 
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gmkkai



Joined: 02 Jan 2001
Posts: 4
Location: Gig Harbor, Wa , USA
PostPosted: Tue Jan 02, 2001 2:46 pm    Post subject: Best grade of gasoline to use Reply with quote
I have a 92 325ic conv, e30 bodystyle, anyone care to comment on what grade of gas I should be using? Regular, mid or premium?
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thedoctor2001



Joined: 30 Dec 2000
Posts: 46
Location: fort myers, fl usa
PostPosted: Tue Jan 02, 2001 4:56 pm    Post subject: Best grade of gasoline to use Reply with quote
My 89 325 iC runs great on mid grade. Under hard acceleration, regular gas will bounce the valves, so I avoid it. I have read that BMW detunes the cars slightly to allow for us paupers running less than premium. My spousal unit prefers to run only premium in her 98 323i but I'm hard pressed to notice any difference when I put in a tank of mid.
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YK2



Joined: 05 Jan 2001
Posts: 148
Location: New Joisey
PostPosted: Fri Jan 05, 2001 11:48 pm    Post subject: Best grade of gasoline to use Reply with quote
My 89 325 ran perfect on both regular, and mid grade gasoline. However after I had the software upgraded, head ported, and, polished, and headers installed I was told to use premium,and I did untill I was in a pinch and filled up with 89 octane. The car ran like crap! so unless you modified it, go with what's cheap. however I believe your spousal unit's 323 needs 89 octane or higher, check the manual
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