My best was 525km on 52 liters of Petrocan 91
That was summer on a 105 to 115 km/h run to North Bay and back. 95% highway.

Worst street mileage was in winter with snow and traffic. Just over 320km on about 50 litres.

 

91 octane Shell V-power everytime.

 

chevron with techron

 

I consistently get 250 per tank and always have in the city.....i think when i replace my air filter and plugs it went to 300. The car has flooded three times this winter due to cold starts and -25 to -30 weather so my mileage is the ***** again. I need a tune up again because i just got rotor misfire code at high rpms. With the CEL on the gas is just draining out of the tank(half way between half and a quarter tank left and i am at 120 km )

Highway has always been good to me(easily over 400 even if i am a jerk and if i am nice i can get about 550)

Always shell vpower unless i am in Saskatchewan(we have a fuel tank on the farm with 87 in it), still runs fine i just dont drive it as hard....i am sure it would be fine though unless you kept it in high rpms for a long time.

 

Hamilton to Sudbury on one tank (just barely) however I have slightly undersized winter wheels and had to keep the partial defroster on nearly constantly.



And check out the badass phones they have up there.

 

Lol...I'm from Sudbury. Nothing to do there but ice fish and shoot stuff. Girls are easy, but the question is...does anyone want them??

 

Give REGULAR 87 oct a try, you will be suprised that the fuel economy improves ALOT and the car will be faster in city driving, I noticed that theres alot more power with regular when youre below 6000rpm.

 

Can't risk that my man...I don't want to put Ethanol in my engine. I would rather pay more for fuel and get worse economy than to unleash that low grade fuel on my car. In a perfect world I would move to Europe and use 100 octane gas...

 

I use shell v-power......but only runs 280 - 300 km per tank

 

Shell V-power.. 350km in winter... 400+ in summer.

 

+1 with this cold snap we have been in most of January, I am getting roughly 350-370KM a tank. I am about 70% highway.

In the summer I was getting about 410-425KM

 

Why do we get less fuel economy in the winter? figure it would be better since it shouldn't take as much to cool the engine, saving power, and therefor gas.

 

I think it needs to dump more fuel to warm the engine to operating temps in the winter thus worse fuel economy. In addition, a big one is that, the CATALYTIC convertor's function does not work in cold, it needs to be heated to work, so thus again more fuel dumped to warm things up. Just before the CAT, I think there is a ballast where the secondary air pump will dump air in to combust any remaining hydrocarbons from the exhaust before going into the CAT. That part also definitley needs to be heated to work.

In summary, more fuel is used to warm up various parts of the exhaust system to operating temperatures in the winter than it is in the summer.

I don't believe the drive cycles are what kills the fuel economy, it's the daily initial starts from cold to operating temperature that is killing the fuel economy. You should take a wiff of your exhaust on a cold start. I think it's just pure fuel vapour! LOL, totally get high on dat shiet.

 

Yeah, I have noticed that fuel vapour smell in the morning. It is some seriously straight gas. Also, I think you are onto something with the secondary air pump. For the first few minutes after I start my car up there is this high whirl going on from somewhere under the hood. It goes off once my car is heated up.

Also, don't forget you drive around with your front window defroster on a lot in the winter (the majoirty of the time for me.) Even though the A/C button isn't lit up, turing on your front window defroster (even in window/floor split mode I believe) runs your A/C compressor and wastes gas.

For those who were unaware of this, it happens because A/C means air conditioner, i.e. conditions the air. I'm not sure if it is because it sends air through filters to clean the air, or removes moisture from the air, or what. I believe it is a saftey standard that whenever you are blowing air onto your windshield it has to be filtered (to avoid dirtying/fogging up your sight lines). Making air cold is just another function it can perform if needed through freeon.

 

Yes, front defroster will operate A/C system

 

No, more octane than the engine needs to prevent pre-ignition (aka ping, dieseling) is a waste of money.

Spec's call for 91 so that's what I use most of the time.

 

I only get around 250-275 till just after or before the light comes on (always fill up before if possible).

Obvs I use highest octane possible at whichever station is nearest, never stop at crappy stations, always 91+.

 

393.8 @ 49.838L on Petro Canada 91 this last fill up.

 

LOL what is it that youre risking?

 

I usually hit around 150 - 170km at a half tank and fill up around 280 - 320km with a quarter tank or so left.

 

Wow, I can't belive the numbers you guys are getting. When I was N/A my average was around 230km a tank. I didn't drive it like a mad man. Cruise around 2800-3000rpm. Once I broke the 300km mark but I did alot of highway driving on that tank. My 8 must have been built on another planet.
Okay guys sit down for this one. With the mod's on her now, I'm getting around 150-170km a tank. That's on Chevron 94. I go into boost at least 2-3 times a outting though. So hard not to.

 

wow... 150 - 170km / 60 L!!!

You're telling me you're burning 2.5L of fuel every 1km of mileage??? ****, trying to imagine a little more than a 2L bottle of coke filled with gasoline GONE every 1km of driving...

Are you sure?

 

I fill up when the tank is just under 1/4-1/8 full. and ya dude. it bums me out big time. This is my new home.....

 

^Wish i had as much money as you had to spend on all the things you have done to that car .

You should take a video of it and put it on youtube so we can see how it pulls.

 

Here is one going up hill. 5.5 seconds to get her into 4th gear.

http://video.google.ca/videoplay?doc...71912&hl=en-CA