higher octane better for v6?

[Sean Mandell]

I know this topic was covered before but I don't see how 87 octane is better for these k series motors. When mazda quotes hp numbers is this on their gas or north american gas. In japan they have a 100+ octane gas. I know every time I fill up with sunoco 94 and insert octane booster the car runs like a champ but I can't say this is true when I feel cheep and use 87 she feels a little sluggish.<P>just looking for opinions.

[lazzyie]

its not nessisarly better but 87 gas burns quicker, higher octane gas helps your car run better especially if its a ze because as compression goes up so should octane, thats why 16:1 race car engines run jet fuel at 116 octane, 87 helps pass emissions though because it gets out of the system faster

[ProtegeSTS]

you want to run the lowest octane you can without detonation. That will provide the most power.

[lazzyie]

well put jesse

[Golliwog]

/agree ProtegeSTS