Fuel Economy

[wushumasterku]

latest tank
444.4km with 32.097L
that's 7.22L/100km

[GabL]

Originally Posted by wushumasterku

latest tank
444.4km with 32.097L
that's 7.22L/100km

I got roughly the same mileage... but in the beginning, I can only get around 450km from a full tank... now I can get 450 with two bars left!

[Ziv]

I notice it dropped a bar roughly every 70clicks or so, lately it's been dropping every 75-78. I guess it's gettin' better and better. Of courze, I use only 91 or 92. whichever higher is available.

[wushumasterku]

^ why do you use 91 or 92??

[Ziv]

Originally Posted by wushumasterku

^ why do you use 91 or 92??

why not? when I was driving my old altima('99), 91 and 92 last better than 87.

[swng]

There are people who believe that higher octane fuel can give them better mileage. Some say higher octane fuel will also make cars last longer and maintenance cheaper and easier. I do not want to dispute. People are entitled to make their own judgements and free choices. I only want to point out that higher octane fuel can cost up to 10+% more than Octane No.87 fuel, and it is highly doubtful if one can get 10+% more mileage by switching to higher octane fuel. Also, some people feel that higher octane fuel can make their cars more peppy. If that is true(I don't know), I think it will be up to the individual concerned to decide if the perceived improvement can justify the additional cost.

For myself, if the user's manual says Octane No.87 fuel is o.k., I will use it, as long as my car is properly maintained and not too old.

[GabL]

Should follow what the user manual recommanded to you, I think the manufacturer knows more about the car than yourself!

http://autorepair.about.com/od/engin...hoctanegas.htm

[wushumasterku]

for me, i only use 92 or 94 in my prelude cuz it requires it
and in my xterra supercharged, it required it too.

i was waiting for the day my yaris came in so i can start using 87.

[why?]

Actually in the USA they use 93 octane for the testing procedures for gas mileage and for horsepower. It makes it so they do not have to change fuels for different vehicles.

Higher octane fuel will definately give more power if the vehicle's ECU can adjust for it. Same thing for gas mileage. I'd be surprised if you could find a vehicle that would not adjust for slighty higher octane fuel.

Still, the actual cost vs extra mileage would have to be figured out.

[Ziv]

For those of us in North America, I am sure you guys have heard enough commerical about 'higher octane fuel' will make your car goes better, more mileage, better for your engine.... etc. Matter in fact, Petro Canada have a commerical about keep using their WINTER FUEL would 'clean your engine' effect or sort.

Any of you believe any of that? and how relieable is the source of Petro's Commerical compare to >about.com< for 'high-octane gasoline does not outperform regular octane in preventing engine deposits from forming' ??

For meself, I will stick with my experience (91,92) for now, but the manual DID mention about using 87. Plus I went to the dealer yesterday and they said yeah, use 91, use 91! ha ha......... so it's like a crossroad.

[why?]

Gasoline itself does not clean engines. Additives that gas companies put in their gasoline is what does the cleaning.

Gas companies usually put the most and strongest additives in the highest octane fuels.

[yariman]

The Yaris engine is designed to run on the fuel that is recomended in your manual. ( different parts of the world ) Unless you can change the timing and fuel maps etc. it won't run any better on a higher octane fuel. There are more additives in better fuels such as Chevron has more Techron in their higher graded fuels.

[NickNickNick]

3700km on my 06 Yaris, I get about 800km to a 42L tank.

[yariman]

WOW Are all your roads downhill? That's amazing!

[p2filz]

Originally Posted by Ziv

why not? when I was driving my old altima('99), 91 and 92 last better than 87.

higher octane only makes the gas burn slower so that higher compression engines dont knock and ping. i dont know about cleaning agents in higher octane being in higher quantity but what ever like said before if the car specifies higher then do so if not dont those are my $.02

[NickNickNick]

Originally Posted by yariman

WOW Are all your roads downhill? That's amazing!

Nope, actually I live in Saskatchewan where everything's flat.

I thought that was a little high, but I went from Regina to Yorkton (160km) to Regina (160km) to Medicine Hat (500km) and didn't fill until Medicine Hat, and got 41.6L in or something.

[swng]

That would appear to be a lot of highway driving. Still great numbers!

[why?]

Originally Posted by p2filz

higher octane only makes the gas burn slower so that higher compression engines dont knock and ping. i dont know about cleaning agents in higher octane being in higher quantity but what ever like said before if the car specifies higher then do so if not dont those are my $.02

Almost all cars will be able to adjust for higher octane gasoline, so their will be some benefit.