LOL...
Wayne & I were standing there reveling in the auditory pleasure provided.

 

Hey I just dropped in on this thread.
You are right Ian, Sam didn't appear to be driving too conservatively on making his departure from the meet. It did sound nice with the Coupe growl along with tires grabbing for traction. I'm sure it is what Sam said "Foot Slipped"

 

Has anyone had more success with 94?

 

I've actually had better fuel economy from Shell V-Power than Ultra94. I get about 11/100km, accelerating decently hard, but crusing at low-ish speeds.

 

I used Sunoco Ultra94 for about the the first 9 months and recently I switched to 91. After 2-3 months on 91 there has been no noticeable difference in mileage or performance.

 

Hey guys,
I use Sunoco 94 all the time and I get about 400km per tank with all city driving (18.75L/100km), and about 600km per tank with all highway driving (12.5L/100km).
Is this just as terrible as everyone else?!

 

Uhmm.. no... I get better than your only highway in my mix of city and highway... Actually, I get about 600km per fillup as well, but I just fillup when the light comes on, and that's nowhere near full tank. I usually put in 60-63L, and full tank is like 75 or 76

 

I get about this too with mix city/highway driving, however I try not to rev above 3000, occasionally to pass people......

 

<!-- google_ad_section_end -->G35 CB - I do a little better than you. Usually I can drive 475km city driving and around 650km hwy driving at an average 115km/hr. (before the light comes on) I don't drive reckless in the city. Never WOT but I still get it up to 4K-5K RPM often.
You say you get 400km/tank city @ 18.75L/100km and 600km/tank hwy @ 12.5L/100km. To obtain these fuel economy numbers you would have to run the tank dry of all 76L. The numbers don't quite make sense.

As IVRY PRL states, we have a 76L tank capacity but a fill-up usually only takes about 63L once the low fuel light comes on.
How far we travel per tank is interesting but not nearly as relevant as calculated L/100km or mpg.
Calculated, my G consumes around 13.3L/100km city and 9.6L/100km highway. (21.2MPG city/29.4MPG hwy)... and like I mentioned, my numbers have not changed since switching from 94 to 91 test.

 

rpm&my g35 - yeah, i guess you're right. i don't use up the whole tank, so if i estimate about 400km city driving per 70L it works out to about 17.5L/100km and about 600km highway driving per 70L that's about 11.7L/100km. that's just an approximate number, i actually have no idea how much fuel is left when the gas light comes on.
either way it's not great fuel economy, but hey, i never bought this car with the intension of conserving gas.

 

"but hey, i never bought this car with the intension of conserving gas."
If it makes you feel better, I think my F.E. has gotton a little better since I got it August 07. nothing to write home about though. I just have 16500km on her now.

 

Pretty much dead-on my numbers on 89. Last highway run was about 400km at 120km/h, I could probably squeeze out a tad more with a lighter foot..

 

Hey guys... I was going to start a new thread about this but it fits in here so we will just keep this one going.

I seem to notice an odd irregularity with fuel consumption in my 06 6mt Sedan. Conventional wisdom on this site states that I should be getting 26-24 mpg depending on passing et al out of a tank of gas on highway milage. (For my US friends this is using imperial gallons, I have a very old gas millage calculator that the alberta government gave out back in the late 80's early 90's its been in every car I ever owned and Im not changing it any time soon; regardless this millage wont translate for you folks directly). This speed is given for around 110-120 km/h which from what I have scene on here is the sweet spot.

This is all well and good but I notice when I drive slightly faster I seem to get significantly better milage out of the car. (Read noticeable but unknown yet if it statistically significant).

The examples I bring are by no means scientific yet. But I notice driving the car at around 135 km/h 6th gear at 3150 revs I seem to quickly approach the 30 mpg mark. Else wise I seem to get the normal 24-26.

Now, I cannot hold this to be grace as I hit alot of traffic on the trip I just got back from and that held me back (especially on those pesky 80km/h roads ) but it seems to correlate to me. That is to say, driving at exactly 115 not hitting any major stops and only having to put my foot down once or twice to pass netted me 26. Driving much faster this trip, around 135km/h albeit hitting many more slow downs and passing significantly more (and long passes approaching dumb speeds by the end of the pass). I netted 28 and 29 respectively.

The best tank of gas I have scene yet out of the car (I've only put 6 or 8 tanks into it, haven't had it that long) was arguably the fastest mean speed traveled some where around 145 (speedo said 150 but I have learned it to be slightly out).

Im wondering if there isn't a "sweeter" sweet spot created by a natural area in the torque curve combined with a great variable valve timing mark at that RPM that is creating same?

Anyone else driving a 6mt out there that can provide some fuel to the fire as it were (yes pun was intended).

Seems like I may have an excuse to drive faster after all... I swear its so I can be GREEN (make the PIRUS people smile a little, eh?)

S.DUNN

 

^ Those are some unusual findings. I'm not aware of anyone only getting 24-26 mpg imperial on the highway. Those numbers are what we see from our US friends using their smaller gallon. I've also never heard of someone getting better economy driving at 135km/h versus 115; and their best driving at 145-150. That's a high speed for a full tankful.

My '04 M6 coupe delivers 30-32 on the highway running about 115-120 km/h. Mine drops if I am running faster than that.

G/L with the car.

 

I agree completely.
It's unheard of because it defies the laws of physics.
Wind resistance develops exponentially with speed.
As an example (w/o doing the actual calculation), you could increase speed by 10% from 115 to 127;
the resultant wind resistance could increase by 40%.
So... best mileage occurs at the saw off point of peak mechanical efficiency & least amount of resistance.
That generally occurs between 100 & 120 Km/hr.