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Old 04-04-2007, 01:45 PM   #55
Kaotic Lazagna
 
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the more expensive cars that i've had got less mpg. then again, the Camry and GTI used always used plus with a tank of premium once-in-a-while, unlike my Yaris, all regular except that one time.
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Old 04-04-2007, 01:57 PM   #56
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try it..

try filling up with regular and track km or mile then fill up with premium...the car i drove which is cavalier full tank regular run me about 330 km then switch to premium im constantly running over 360... my celica regular will run the same 310-320 with premium 360-370..and im doint same thing week after week..work to friends houses...


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Originally Posted by Kaotic Lazagna View Post
the more expensive cars that i've had got less mpg. then again, the Camry and GTI used always used plus with a tank of premium once-in-a-while, unlike my Yaris, all regular except that one time.
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Old 04-04-2007, 01:59 PM   #57
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i don't want my Yaris to get used to premium, so i'll test it out again in a month, or when ever the gas prices goes down a bit. premium can get close to 4 bucks here.
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Old 04-04-2007, 02:40 PM   #58
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convert to diesel!!!!!!!!lolz....
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Old 04-04-2007, 02:43 PM   #59
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lol...don't know why, but diesel is sometimes more expensive than regular.
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Old 04-04-2007, 04:16 PM   #60
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Quote:
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our yaris can run 87 octane or more obviously higher the octane the cleaner it is..it doesnt mean you cannot use more than 87.. its saying the lowest grade you can use is 87 but it does not limit it to 87..and i will guarantee you that you ll get better mileage on premium compare to regular..its jsut the matter of you spending a little bit more for premium.. go with experience and youll see..spend 40 buck or fill up the same liter regular compare to premium and youll see that marcus is right.. oh yah by the way sum cars cannot take 87..most honda is premium and UP!
Marcus, do you know how octane works? It RETARDS the combustion...why would you do that with a tiny low compression Yaris motor? I think you're still holding on to old Grandpa logic, which dictates that using premium means higher MPG, and lower emissions...this is false unless the car is tuned for the higher octane...you use Octane 93 or 94 in your Yaris you will get lower MPG, and less power from the motor...it is not tuned for higher octane....say goodbye to old thinking....it no longer applies these days. And you're wrong again, most Honda's use regular 87, NOT premium.
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Old 04-04-2007, 04:18 PM   #61
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Quote:
Originally Posted by marcus View Post
try filling up with regular and track km or mile then fill up with premium...the car i drove which is cavalier full tank regular run me about 330 km then switch to premium im constantly running over 360... my celica regular will run the same 310-320 with premium 360-370..and im doint same thing week after week..work to friends houses...

THAT IS A CAVALIER!!!! How can you assume that what works for a Cavalier will work with a Yaris?!?
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Old 04-04-2007, 04:35 PM   #62
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...you again!!

hey its not just the cav its the celica gts, 94 honda civic si, mitsubishi lancer es., 95 acura integra, camry 95.., want me to go on... but hey use 87 its ur car...all that matter is physical evidence...its kinna like a dead guy teling you how he got killed using forensic .

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THAT IS A CAVALIER!!!! How can you assume that what works for a Cavalier will work with a Yaris?!?
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Old 04-04-2007, 04:40 PM   #63
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Marcus,

2006 Mustang, 2007 Yaris, 2003 Expedition, 2002 Camry, 2004 Camry, 2005 Civic...these ALL get worse gas milage when using premium....but these are not Yaris, so this list and YOUR list is irrelevent.

All cars, regardless, will get better milage when one uses the octane the car was tuned for...this is the optimum for best performance.

The Yaris will get worse milage with Premium...it's sad that superstitions die hard....

Stop listing other cars....lets talk about the Yaris.

YARIS!
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Old 04-04-2007, 05:14 PM   #64
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???

pavel,
im not sure how they tune your car there in cali...but in here with the cold weather the slower the burn of fuel the extra hp on the car...extra boost on hp reaches distance faster...its works for yaris rs, yaris s, yaris package a, yaris package b, yaris yr, yaris yaris yaris yaris yaris...........lolz :) :) :)


Quote:
Originally Posted by Pavel Olavich View Post
Marcus,

2006 Mustang, 2007 Yaris, 2003 Expedition, 2002 Camry, 2004 Camry, 2005 Civic...these ALL get worse gas milage when using premium....but these are not Yaris, so this list and YOUR list is irrelevent.

All cars, regardless, will get better milage when one uses the octane the car was tuned for...this is the optimum for best performance.

The Yaris will get worse milage with Premium...it's sad that superstitions die hard....

Stop listing other cars....lets talk about the Yaris.

YARIS!
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Old 04-04-2007, 05:25 PM   #65
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Pavel Olavich have you really already made 135 posts since you joined at
03-19-2007, 11:41 AM

wow.......
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Old 04-04-2007, 07:46 PM   #66
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Your regular is only 87?

Ours:
Regular - 92
Premium - 95
Optimax™/Ultimate™ - 98 (The name is different with each company)

EDIT: Apparently the number is calculated differently and the fuel is the same thing - shown here.
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Old 04-05-2007, 10:47 AM   #67
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yup!

canada
regular = 87
premium = 89
gold = 91
sunoco= 94 highest..


Quote:
Originally Posted by Edd View Post
Your regular is only 87?

Ours:
Regular - 92
Premium - 95
Optimax™/Ultimate™ - 98 (The name is different with each company)

EDIT: Apparently the number is calculated differently and the fuel is the same thing - shown here.
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Old 04-05-2007, 02:00 PM   #68
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I agree with the others on that say higher octane will not give better fuel economy (unless the ecu changes the tune because of it). There are a limited number of cars out there that have ECUs that will adjust the tune of the car based on the octane of the fuel.

Usually the ECUs that have this feature only actually work in reverse. They change the tune when you put lower octane fuel in and it hurts performance and fuel economy. This is because those cars were designed to use higher octane fuel to begin with.

Anyone that says their car get better mileage with premium is probably just driving it better because they just got raped at the pump.
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Old 04-05-2007, 02:09 PM   #69
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i think im getting what other people are sayin..only because you guys already are using 89 and above so it doesnt make the diff..in fact u may lower ur gas mileage as well..in canada yaris is running on 87 octane gas..and 90 % of cars out here.. big difference on 87 to 89 without any exaguration ull notice the diff right away swiching to 89..gas mileage is actually higher with the 89 octane gas..and that is based on my experience with multiple differents cars out here...then again i dont drive high end cars..bmw,lexus,infiniti..etc....
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Old 04-05-2007, 02:27 PM   #70
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Aren't there some warranty issues with putting 93 octane fuel in a car rated for 87 from the factory? You guys putting high-grade fuel in Yarii better hope we don't find out later on that she doesn't like it. Fuel systems aren't cheap.

Last edited by ChinoCharles; 04-05-2007 at 02:38 PM.
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Old 04-05-2007, 02:35 PM   #71
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i dont know about dealer issue!

you may need to ask ur dealer all i know is it should run atleast 87 octane or up..it didnt say just use 87. then again 93 octane has no diff with 89..the only time it will make the difference is you adjusting or advancing ur timing and that will give you faster acceleration..make sure its not too advance...but the only thing that i dont know is if the yaris ecu will automatically bring the timing down again after you advance it..

Quote:
Originally Posted by ChinoCharles View Post
Isn't there some warranty issues with putting 93 octane fuel in a car rated for 87 from the factory? You guys putting high-grade fuel in Yarii better hope we don't find out later on that she doesn't like it. Fuel systems aren't cheap.
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Old 04-05-2007, 02:36 PM   #72
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Advance timing requires higher octane gas..otherwise ur engine will knock..i have been doing this on my celica for the past 6 years it gives me faster take off with 94 octane from sunoco..but uses more gas though..then i bring it down on winter...1 bolt on the cam to adj. takes less than 2 minutes.. timing gun nessesary..
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