Premium Gas - Page 11 - Toyota Yaris Forums

eTiMaGo · 06-27-2007, 01:36 PM

ok maybe it should say "87 or higher, within reason"

YarisTom73 · 06-27-2007, 02:32 PM

Well, with all the

I can only draw the conlusion that we should do what we want with our own cars. If you don't like cheap gas, run something higher. If you don't like high octane, run cheap stuff. 'nuff crying about it, just split the difference and run mid-grade as I do

fu_im_from_texas · 06-27-2007, 03:25 PM

Quote:

Originally Posted by eTiMaGo

ok maybe it should say "87 or higher, within reason"

...also the "xx or higher" is the industry standard for recommending fuel. so my lexus gs430 says "93 or higher" which really doesnt make much sence, because 93 is the highest pump gas avaliable in north america... toyota is saying "use 93"

the yaris says "87 or higher" which really doesnt make much sence because you cant get anything lower than 87 in north america

...the industry standard is to recommend the octane then add "or higher" at the end

"....using a higher octane gasoline than your owner's manual recommends offers absolutely no benefit. It won't make your car perform better, go faster, get better mileage or run cleaner. Your best bet: listen to your owner's manual."
http://www.ftc.gov/bcp/conline/pubs/autos/octane.shtm

why do people insist on ignoring empirical and statistical data?

eTiMaGo · 06-27-2007, 04:01 PM

Quote:

Originally Posted by fu_im_from_texas

...also the "xx or higher" is the industry standard for recommending fuel. so my lexus gs430 says "93 or higher" which really doesnt make much sence, because 93 is the highest pump gas avaliable in north america... toyota is saying "use 93"

the yaris says "87 or higher" which really doesnt make much sence because you cant get anything lower than 87 in north america

...the industry standard is to recommend the octane then add "or higher" at the end

"....using a higher octane gasoline than your owner's manual recommends offers absolutely no benefit. It won't make your car perform better, go faster, get better mileage or run cleaner. Your best bet: listen to your owner's manual."
http://www.ftc.gov/bcp/conline/pubs/autos/octane.shtm

why do people insist on ignoring empirical and statistical data?

Hmmm that's quite probable too, to be understood as, 87 is just fine, but don't worry if for some reason you can only get 91, it won't damage the engine.

heheheh too much science studies is just pushing me to experiment, if only I had that toyota intelligent tester or something similar to measure actual spark advance

Or, we can find a Toyota ECU engineer from Japan to enlighten us?

Kioshi · 06-29-2007, 04:10 PM

Quote:

Originally Posted by fu_im_from_texas

...also the "xx or higher" is the industry standard for recommending fuel. so my lexus gs430 says "93 or higher" which really doesnt make much sence, because 93 is the highest pump gas avaliable in north america... toyota is saying "use 93"

the yaris says "87 or higher" which really doesnt make much sence because you cant get anything lower than 87 in north america

...the industry standard is to recommend the octane then add "or higher" at the end

They say some number and higher because say if you are driving in a foreign country....than something higher than whatever number they tell you can be used. But who would spend the money to be driving a U.S. car in Europe or Africa anyway ~

Like Tom said, just use mid grade. If its used car use cheap stuff. If its a new car in your first hands, use mid grade. If its hp is 173+ use premium~

WRBlue · 06-29-2007, 06:57 PM

Quote:

Originally Posted by Kioshi

Like Tom said, just use mid grade. If its used car use cheap stuff. If its a new car in your first hands, use mid grade. If its hp is 173+ use premium~

That makes no sence...

If anything, an older car needs higher grade gas because of bad maintance, wrong plugs, carbon buildups in the combustion chamber, etc. But, if a car is maintaned, there is no reason what so ever to use anything but 87 octane. I have been to gas stations that don't sell less than 89, and I've been to some that sell 86...

There are a great many cars that make more than 170hp that only use regular. For example: My last truck was a V6 S10 that made 200-ish, and ran best on 86. The Jeep I traded in for the WRX made 235hp on 87.

marcus · 06-27-2007, 03:55 PM

i find the yaris timing is right on the border of you being able to use 87 octane. slight change of slopes and temp even with its ecu adjusting..gives you a sluggish feel...89 got better outcome..its could also be just my car.. "Dont you guys notice a whirring sound when you accelerate , try driving beside a wall" i need to know if this is normal. or a slight knockin on the engine?

eTiMaGo · 06-27-2007, 04:03 PM

Quote:

Originally Posted by marcus

i find the yaris timing is right on the border of you being able to use 87 octane. slight change of slopes and temp even with its ecu adjusting..gives you a sluggish feel...89 got better outcome..its could also be just my car.. "Dont you guys notice a whirring sound when you accelerate , try driving beside a wall" i need to know if this is normal. or a slight knockin on the engine?

I wouldn't be knock, I pored through all I could find in the repair and technical manuals, as soon as the knock sensor feels something out of the ordinary, it will retard the spark, so unless there is something wrong with the knock sensor, you should not "feel" knock for over a second.

jdium · 06-27-2007, 05:17 PM

Quote:

Originally Posted by marcus

i find the yaris timing is right on the border of you being able to use 87 octane. slight change of slopes and temp even with its ecu adjusting..gives you a sluggish feel...89 got better outcome..its could also be just my car.. "Dont you guys notice a whirring sound when you accelerate , try driving beside a wall" i need to know if this is normal. or a slight knockin on the engine?

Maybe if feels sluggish because it's only 105 hp going up a hill in hot weather?

As for the whirring sound, it's probably exhaust noise. As quiet as these cars are, there is still some noise. It dissipates easily normally, but a wall would reflect it back to you...

Pavel Olavich · 08-15-2007, 02:52 PM

Quote:

Originally Posted by marcus

i find the yaris timing is right on the border of you being able to use 87 octane. slight change of slopes and temp even with its ecu adjusting..gives you a sluggish feel...89 got better outcome..its could also be just my car.. "Dont you guys notice a whirring sound when you accelerate , try driving beside a wall" i need to know if this is normal. or a slight knockin on the engine?

I know the sound you're talking about....my old '97 Camry did the same...that sound is NOT pinging...it is just the fuel injectors doing their thing....yea, my Yaris does the same thing when I drive near a wall....again, not pinging, just valve and injector noise....no worries.

marcus · 08-15-2007, 03:03 PM

Quote:

Originally Posted by Pavel Olavich

I know the sound you're talking about....my old '97 Camry did the same...that sound is NOT pinging...it is just the fuel injectors doing their thing....yea, my Yaris does the same thing when I drive near a wall....again, not pinging, just valve and injector noise....no worries.

thanks pavel ur the first to mention the fuel injectors..atleast im not the only one that notices the noiise during acceleration..

marcus · 06-27-2007, 05:55 PM

thanks guys hopefully its nothing...

cm07yaris · 06-29-2007, 05:32 PM

This topic always comes up on every forum that has to do with something that uses gas. It also turns into a huge debate taking up several pages and ending with the same result. The same goes for the big debate between using synthetic or natural oil.

Jerkratt · 06-29-2007, 09:46 PM

ok there is stuff higher then 93 in north america its ether 94 or 95 from shell or sunoco

Kaotic Lazagna · 06-30-2007, 02:01 AM

wow, i can't stand to read this thread anymore, and it's my own thread. lol...

fu_im_from_texas · 07-01-2007, 12:45 AM

Quote:

Originally Posted by Kaotic Lazagna

wow, i can't stand to read this thread anymore, and it's my own thread. lol...

+1 ...last post from me for this thread... i promise...

davembfan · 06-30-2007, 04:18 AM

I usually get 87, but i got 89 once and it was about the same with mpg. since I have had my car i've always used shell gas, don't plan on using another brand. I've always been weird with gas and my cars, always fill up the same place, usually the same pump. Unless of course im on a trip, but then ill still use shell.

Edd · 06-30-2007, 06:03 AM

Using higher octane than recommended will NOT make the engine knock*. It will make it less likely to knock. Higher octane = more stable and less likely to prematurely combust.
Members in this thread are correct in saying that you will most likely have no benefit from increasing the octane rating on the fuel (unless your car knocks at the recommended amount).
The top fuels (98 RON) are there to replace leaded petrol. Back in the day, lead was THE way to boost octane. Now we can achieve higher octane ratings without it, there is no need to burn lead in old cars.

*Heh, I just read the last couple of pages and I don't think anyone said it would. Nevermind then.

06-27-2007, 01:36 PM	#1
eTiMaGo vroom vroom View User's Garage Drives: lil red 5-door Join Date: Sep 2006 Location: Bangkok, Thailand Posts: 7,744	ok maybe it should say "87 or higher, within reason" __________________ The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ...

06-29-2007, 09:46 PM	#14
Jerkratt View User's Garage Drives: 08 Yaris Liftback S (RIP 07) Join Date: Apr 2007 Location: Fair Lawn, NJ Posts: 1,379	ok there is stuff higher then 93 in north america its ether 94 or 95 from shell or sunoco __________________ "It hurts more when its wet"

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06-27-2007, 02:32 PM	#2
YarisTom73 46 and 2, just ahead... Drives: 07 Yaris sedan Join Date: Jun 2007 Location: Johnstown, PA Posts: 533	Well, with all the I can only draw the conlusion that we should do what we want with our own cars. If you don't like cheap gas, run something higher. If you don't like high octane, run cheap stuff. 'nuff crying about it, just split the difference and run mid-grade as I do

06-27-2007, 03:55 PM	#7
marcus toyota View User's Garage Drives: 2007 Yaris RS Blazed Join Date: Oct 2006 Location: toronto, canada Posts: 3,637	i find the yaris timing is right on the border of you being able to use 87 octane. slight change of slopes and temp even with its ecu adjusting..gives you a sluggish feel...89 got better outcome..its could also be just my car.. "Dont you guys notice a whirring sound when you accelerate , try driving beside a wall" i need to know if this is normal. or a slight knockin on the engine?

06-27-2007, 05:55 PM	#12
marcus toyota View User's Garage Drives: 2007 Yaris RS Blazed Join Date: Oct 2006 Location: toronto, canada Posts: 3,637	thanks guys hopefully its nothing...

06-29-2007, 05:32 PM	#13
cm07yaris View User's Garage Drives: 2007 Toyota Yaris Blazing Blue Join Date: May 2007 Location: Appleton, WI Posts: 647	This topic always comes up on every forum that has to do with something that uses gas. It also turns into a huge debate taking up several pages and ending with the same result. The same goes for the big debate between using synthetic or natural oil.

06-30-2007, 02:01 AM	#15
Kaotic Lazagna View User's Garage Drives: '14 GT86, '08 Vitz Join Date: Dec 2006 Location: Central Valley, CA Posts: 9,873	wow, i can't stand to read this thread anymore, and it's my own thread. lol...

06-30-2007, 04:18 AM	#17
davembfan Drives: 2007 Toyota Yaris Sedan Join Date: May 2007 Location: Tennessee, USA Posts: 36	I usually get 87, but i got 89 once and it was about the same with mpg. since I have had my car i've always used shell gas, don't plan on using another brand. I've always been weird with gas and my cars, always fill up the same place, usually the same pump. Unless of course im on a trip, but then ill still use shell.

06-30-2007, 06:03 AM	#18
Edd Drives: None Join Date: Mar 2007 Location: Australia Posts: 193	Using higher octane than recommended will NOT make the engine knock. It will make it less likely to knock. Higher octane = more stable and less likely to prematurely combust. Members in this thread are correct in saying that you will most likely have no benefit from increasing the octane rating on the fuel (unless your car knocks at the recommended amount). The top fuels (98 RON) are there to replace leaded petrol. Back in the day, lead was THE way to boost octane. Now we can achieve higher octane ratings without it, there is no need to burn lead in old cars. Heh, I just read the last couple of pages and I don't think anyone said it would. Nevermind then.