What do you feed your M3 in Canada? 91 or 94 octane?

[M3-Mike]

Originally Posted by Alex07M3

I usually put 91 and a lot of time 94, specially the day before I go to the drag strip to let the ECU adapt to maximize the performance, I saw somewhere that the ECU can adapt up to 96octane!

Is there some type of octane booster product we could buy and add to standard 91 octane gas to get more performance.. or am I way off here?

[Alex07M3]

Originally Posted by M3-Mike

Is there some type of octane booster product we could buy and add to standard 91 octane gas to get more performance.. or am I way off here?

Personnaly, I would'nt take any chance with octane booster, they seem to have a pretty bad reputation in this forum!

[KJ]

Originally Posted by canadian stig

Holy crap! 11L/100km You drive like a grandma! lol. I can't get any better than 16L/100km. My wallet is screaming everytime I pull over at a gas station

And yes, there are basically just 2 or 3 companies I believe that refine gasoline for the canadian market. So all gas is technically the same. I believe the real difference is in the additives and detergents. Each company has its own concoctions. Though I personally haven't noticed any difference in performance or fuel economy. I use petro canada often just because it's right next to my home.

I'm with you, I get 14.8 - 15.6 L/100 km with "regular" driving.

I couldn't get 11L/100km if I tried. Even when I fill up in the U.S., go straight onto the highway and drive all the way back to Toronto, I'm still in the 12's.

If someone is getting 11's, I don't think they're driving the M3 the way it's supposed to be driven!

[WRXXX]

Originally Posted by KJ

I'm with you, I get 14.8 - 15.6 L/100 km with "regular" driving.

I couldn't get 11L/100km if I tried. Even when I fill up in the U.S., go straight onto the highway and drive all the way back to Toronto, I'm still in the 12's.

If someone is getting 11's, I don't think they're driving the M3 the way it's supposed to be driven!

This. My best was 13.9L/km with regular city and hwy combined. 12's if I'm on the hwy constantly. 11's?? That's a mythical figure I have never seen. Do you drive the car half way and then push it yourself afterwards? Lol, get a Corolla.

[ms372]

i always run PC 94 never tried anything else in my M. cars feels great and had it tuned for 94 so i dont think ill be running anything but 94... mileage 16.5 here car is full bolt on

[goldminer]

Originally Posted by WRXXX

This. My best was 13.9L/km with regular city and hwy combined. 12's if I'm on the hwy constantly. 11's?? That's a mythical figure I have never seen. Do you drive the car half way and then push it yourself afterwards? Lol, get a Corolla.

There's nothing mythical about 11's. Last year I did a 700 km trip to northern Quebec and got 9.6 l/100 km. I put the car in 6th and left the cruise control on at 10-15 over the limit. Didn't want to go too fast as the road was wet and I was transitioning into freezing temps. Later on there were isolated patches of black ice.

[Gearhead999s]

Originally Posted by KJ

I'm with you, I get 14.8 - 15.6 L/100 km with "regular" driving.

I couldn't get 11L/100km if I tried. Even when I fill up in the U.S., go straight onto the highway and drive all the way back to Toronto, I'm still in the 12's.

If someone is getting 11's, I don't think they're driving the M3 the way it's supposed to be driven!

I have seen in the 9's if I keep the speed under 110 on Ontario secondary rds

[Mr. ///M3 RD]

Shell 91 V Power

[OM3GA]

Shell V-Power for me

[2000gsr]

91 petro can b/c i save 2 cents per litre, 94 is for ricers.

[danio]

I've been using 94 since I got the car, and am pretty consistant at 13.5L/100km.

Last week, I decided to try Shell 91 V Power, and within' 50km's into the tank, it dropped to 13.4L/100km

This is a mixture DVP parking lot driving and Richmond Hill city.

Ive gotten as low as 13.4, and I feel I push the car at least once a day, so I am very surprised people are getting higher than 14L/100km's. Must be ripping it all the time lol!

[MIC328i]

I wanted to get some driving tips out of you guys, since a few of you are getting 11L - 13L / 100km. I have tried my best and I'm still constantly on 15.x; Do you guys shift at 2 - 3 k rpm? Our car has absolutely no power below 2k rpm lol or that maybe most of the high gas mileage guys are driving dct?

[mofbb]

94

[Superfly_M3]

I use 94 no issues. I've used 94 in all my other cars and had no issues. I dunno how much value this "ethanol" has.

AVG MPG is 14.6L/100km. I've seen 11.2L/100km on the highway.

Nitrogen has no beneficial properties in the conbustion chamber. Its a filler at best.

[apecush]

Originally Posted by Superfly_M3

Nitrogen has no beneficial properties in the conbustion chamber. Its a filler at best.

yeah, and there's just a tad of it in the air as well. like 79% give or take.

[Superfly_M3]

You are still burning O2 no Nitrogen.

[BMRLVR]

The fuel systems in most cars have the capacity to compensate for the reduction in energy content by injecting more fuel, this extra fuel is injected is the reason why fuel economy decreases when using ethanol blended fuel.

Our Ultra 94 (I work for Suncor the parent company of Petro Canada) Is listed as a Top-Tier fuel so using it in your BMW is absolutely fine. The main issue with ethanol blended fuel is that it is Hygroscopic (AKA, it absorbs water). As long as you are burning your tank of fuel in a reasonable period of time there will be no issue with this, however, if you are planning on storing your car for an extended period (more than 2-3 months), fill the tank with some ethanol free fuel so that it does not end up absorbing a pile of water during storage. I have been using Ultra 94 in my car ever since it became available in town this summer and the car works great on it, but before winter storage, I ran the tank almost bone dry and filled up with V-Power and added a bottle of fuel stabilizer.

[Superfly_M3]

Good info BMRLVR, thanks for the educated opinion.

[apecush]

Originally Posted by Superfly_M3

You are still burning O2 no Nitrogen.

I was agreeing with you.

If you want to split hairs, N2 oxidizes/burns to form NO in the combustion chamber...

[Superfly_M3]

Originally Posted by apecush

I was agreeing with you.

If you want to split hairs, N2 oxidizes/burns to form NO in the combustion chamber...

and I agree with you.

But, this means the other "O" molecule get lonely and has to find someone to hang out with. Like another "N", Mr "H", Mr "C" or even worse double "H" which forms CO or H2O .... see how bad Nitrogen is all this pollution

No hatin' its late

[GAM3OVR85]

Originally Posted by KmndntKlink

lol v-power. I'm still in the camp that gas in canada is basically the same regardless of who supplies it (except for octane rating of course). I use OLCO 91, cuz its on my route from work, the people are nice and I get VIP points to offset the already cheaper gas. I tried shell 91 v-power for a while, no difference except prices are constantly $1.40+ even if market price goes down. That pissed me off so I stopped buying it. I save like 10-20$ when I fill up now. In terms of fuel economy, its unchanged. Seriously no difference in sound, smoothness or anything. Still pulling 11.5L/100k which I think is damn good for the beastly v8

Maybe i'm wrong and v-power is the best thing since sliced bread, but I can't notice any difference, not in normal driving. Maybe ill pay closer attention to cold starts though, does it really make a difference? Sometimes it turns over a little longer, but I can't reproduce it reliably so idk.

edit: I kind of agree with apecush, shell's marketing is good. I'm sure I've read some articles before that proved the gas comes from the same place and goes to the stations. only difference is the picture on the side of the truck.

11.5L/100km? how? That's LESS the my 328!! LOL I get 14.6L/100km on my 328 and 18.1L/100km on my M3...Shieeett

[KmndntKlink]

Would you be angry if I told you I broke the 11L/100km mark a few days ago? Got 10.8. The secret is to drive smooth. drive highway and leave buffer zones so you never have to break/accelerate much. slow is smooth and smooth is fast...and fuel efficient

Of course whenever I want to have some fun or blow someone away, it shatters my record instantly. I have real time mpg enabled now and it shows up as 30-40l/100km when you're accelerating! If I don't reset the fuel economy for 6months or so It's usually 12L. don't let anyone tell you that v8's aren't efficient. modern ones are

I also have dct which economy shifts for you if you don't mash it. I can't believe I'm actually getting the bottom limit of BMW's fuel consumption #s. They rate it at 10.5-15.5 highway/city. I thought manufacturers always lied on these, buts its legit.