View Full Version : what octane will the rx8 use?


rotarypower
05-12-2003, 06:04 PM
what octane of gas will the rx8 use?

gettingan8
05-12-2003, 06:08 PM
Unleaded 95 RON(premium unleaded)


RON stands for "research octane number". For those of us in the United States, if you look at the local gas pumps, they have a little yellow, federally mandated sticker that has the octane number of that fuel and under it in fine print it reads "R+M/2 method". That means it is the research octane number and the motor octane number added together and divided by two. In other words, the average of the two numbers. The motor octane rating is figured differently and is most always at least a few points higher than the research octane number. Sooooo, the 93 octane at the local pump does, in fact, meet the 95RON requirement that Mazda calls for.

rx8daniel
05-12-2003, 06:17 PM
They will use whatever the owner puts in the tank. Mazda recommends Premium.

NikoN
05-12-2003, 06:51 PM
all i can get is shitty 93 octane

rotarypower
05-12-2003, 07:35 PM
socal offers 91 octane as the highest from what i've seen.

Renesis08
05-12-2003, 07:46 PM
There is 93octane @ the Shell of the 5 fwy, in San Clemente, right next to the 76 and Jack in the Box. It is on the side opposite the Pac Ocean.

rotarypower
05-12-2003, 07:49 PM
lol. i live in the valley and i don't think it's worth going that far to get the 93 octane. lol. thanks for the info though. much appreciated :)

gettingan8
05-12-2003, 08:08 PM
RON stands for "research octane number". For those of us in the United States, if you look at the local gas pumps, they have a little yellow, federally mandated sticker that has the octane number of that fuel and under it in fine print it reads "R+M/2 method". That means it is the research octane number and the motor octane number added together and divided by two. In other words, the average of the two numbers. The motor octane rating is figured differently and is most always at least a few points higher than the research octane number. Sooooo, the 93 octane at the local pump does, in fact, meet the 95RON requirement that Mazda calls for.

rotarypower
05-12-2003, 09:30 PM
Originally posted by gettingan8
RON stands for "research octane number". For those of us in the United States, if you look at the local gas pumps, they have a little yellow, federally mandated sticker that has the octane number of that fuel and under it in fine print it reads "R+M/2 method". That means it is the research octane number and the motor octane number added together and divided by two. In other words, the average of the two numbers. The motor octane rating is figured differently and is most always at least a few points higher than the research octane number. Sooooo, the 93 octane at the local pump does, in fact, meet the 95RON requirement that Mazda calls for. ooo thanks a lot for clearing that up man. :)

Schneegz
05-13-2003, 02:33 AM
Why does the RX-8 require 95 octane? What is the compression ratio?

rx8daniel
05-13-2003, 06:26 AM
do a search for octane or premium - there are several older threads about this - believe compression is 10

Merciless
05-13-2003, 06:59 AM
alway highest octant you can get...

daedelgt
05-13-2003, 07:24 AM
Originally posted by merciless
alway highest octant you can get...

;)

Always get the lowest octane your car can handle.

mrpink
05-16-2003, 10:24 AM
like he said, use the minimum octane your car can handle.

why? read this:

http://auto.howstuffworks.com/question90.htm