auzoom

So...seing as I dredged up the bad old days...coudl anyone make sense of my BS on the octane levels and so forth? Am I talking crap or not?

Andrew

RotaryIT

I have a feeling that octane levels have a greater effect when combined with temperature. I noticed that in the winter, my 8 performed better on 87 octane. In the summer, (and its been hot lately) I can't use 87 or it pings. I have to use 92/3.

I am on my 4th tank since the "P flash", and I have gone 115 miles, and the "less than accurate" fuel guage is still above 1/2....in the past, I was lucky to reach 100 by 1/2.

So, as the days go by...I'm getting happier.

rx8wannahave

I just filled up this morning:

261.8 miles driven on 13.642 gallons = 19.19mpg (85/15 city/highway)

I know I can't complain, very pleased! :D

I can't wait to take a trip in the 8...

jangle

I get 230-250 MPT. I average 18-22 MPG. Never use anything but 93 Octane. 80% highway, 20% city. As most of you are aware, the Rotary is a high-compression engine. I've talked to some experts about why we have to use 91 or higher Octane. The reason is the higher the Octane, the higher the internal engine temperature can get before the gas burns. The outside temperature has little to do with it unless you're in a traffic jam and it is very hot outside (no air flow forced into the 8). That is why you get the "pinging" at lower Octanes. The gas actually burns (or vaporizes) before its supposed to during the combustion cycle. This also causes a loss of power.

Just thought I'd share because I had the same questions as some of you when I got my 8. For me, the additional cost for Premium is well worth the excitement of driving the 8!

rx8wannahave

I wish I could get 91 (just cause it should be a little cheaper) but I too refuse to put anything other than 93 in my 8. Also, I pour gas about 2-3 times a month and at least one of those fill up's will be with Chevron 93 gas which has that Tech (fuel system cleaner) stuff which by experiance I've found to really do a good job.

That way (because of traffic (well and too keep my rotary clean)) since I can't rev it to 9K daily "sometimes", the little Renesis will stay clean.

Columbus

The best I've gotten was 300 miles before the fuel light came on and that was about 80% highway 20% city. 93 octance and I had the a/c on.

monzter

210-220 is the best i've ever gotten. 95/5 City/Hway I'm not even sure what version of the flash i'm on. Next time i'm at the dealer, I'm going to have them check for me.

jbrasure

I do 95% highway driving, and I can go about 220 miles on 3/4 of a tank.

Old Rotor

I just did a long road trip with the cruse set at 65mph. The fuel lite came on at 371 miles and it took 13.5 gallons. It's not easy to keep the revs down but just to see what it can do. I have a stock auto with 22k on it and run 87oct then 91oct back and forth.

ElusiveFX

Hah, i'm lucky to get over 220 (city driving) out of a full tank...

swoope

iTrader: (5)

are you sure about these #s ???? that is over 27mpg. if so you win. the best i have done is 23 to 24 @< 72mph.

i still average ~21mpg 15% city rest interstate.

beers

midlifer

My automatic just hit 2,000 miles and it seems like no matter how I drive it I get 19mpg. Can't complain, my truck gets 12

Bob

MX6_2_RX8

Finally, we found the car that they used to get the window sticker MPG! You might want to get your car on a dyno, you probably have 250hp+

m2pro

At 250 miles on current tank, (give or take about 3 miles either way), and I still have a quarter tank left. I've been driving this tank about 85% on the interstate crusing at either 74 or 80...AC on. (WHO CAN DEAL WITH THE AC OFF IN ALABAMA?!)

I usually get around 240ish... but on my last tank, I never once conserved. I floored it all around town and ended up at about 150 miles with slightly more than a quarter tank left when I refilled up. I'm used to a 98 Civic ex... I WAS used to flooring it and seeing the difference of maybe 10-20 miles in a tank for WAY less of a tank, and using 87 octane. Now, I'm used to filling up a 16 gallon on 93 octane and getting less miles to the tank considerably. It was sad when I first started... but you just have to accept it and move on and start enjoying the best looking car that ever existed.