What Octane do you use for P11?

[jprimera]

if you have the timing advance ,you should go with 91 otherwaise use 87 or 89.

If your engine is stock, the only difference you'll is in your wallet.
fuzzynaval is raight

[2002G20Racer]

I just use 91. Only the best for my baby.

[howard_w13]

Originally posted by fuzzynaval


well I got 40 more miles out of a tank with 89 compared to 87/ 89-91 is about the same. so does that mean I shouldn't go below 89?

Oh no, not saying that you shouldn't go below 89, but I'm just wondering if the 2-3 mpg increase in gas mileage is worth the extra 10-20 cents/gal I'd spend on plus or premium. Heck, for the last couple of weeks, 87 octane has been only $0.95/gal here in San Antonio. BTW, do you have any modifications to your engine? All I have is the Stillen intake and that's it(for now).

[AWD Primera]

Does anyone know what the conversion is from US Octane ratings to New Zealand Octane Ratings. I understand that they are different. In NZ we have 98 octane fuel. Surely it cant be the same measurement.