Here in Texas its 99+ degrees outside, so for summer im gonna run a higher octane, however.. if you live in a southern region you must also not that different gas is sold over different sessions. In summer here gas distributers sell a summer blend of gas. Its made to not ignite early, and vice versa (winter blend). Either way, dont be a fool.. listen/feel what your engine does, and make the appropriate changes.

 

I run nothing but 92 or 93 octane depending what gas station and it seems to work perfect

 

I dont give f*ck how much it costs, only super or premium, every once in a while, throw down on some 100, but thats probably $5 a gallon right now....

 

got an 01 f4i and the manual states 86 octane or higher

 

weird manual cause i'm looking at hte same thing and it just says "premium unleaded" no numbers listed.

 

My F3's manual says the minimum is 85, so I think I'm just fine with 87

 

Wow that was a lot to read. All I know about this is when octane goes up-spark knock goes down. There....that was easy....

 

All the people talking about cost difference are trippin...

- average bike holds around 5 gal of gas

- premium is avg about 20 cents more than regular

- .20 X 5 gal = extra $1.00...Wow! really going to break the bank!



- even in a car with 15 gal tank it's only $3 extra per tank

 

exactly. what i was thinking is that it's what, 15 cents more per gallon for high octane. so, my stuntbike holds about 3 gallons, so 3x15=45, so 45 more cents......that doesn't seem like much money considering every time i change the oil i put an extra 2$ (1 quart) of oil to save the motor from wheelies...so why not spend .45 more cents to save the motor from detonation?