GX - 1st Gen (2003-2009) Discussion topics related to the 2003 -2009 GX470 models
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What kind of gas? Premium or regular? (merged GX gas threads)

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Old 04-09-11, 12:10 PM
  #241  
ChrisK
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Originally Posted by cssnms
Was the 2005 Owner's manual not available?
I have it.

Is there a physical engine difference between MY 2005, 2006, 2007, 2008, and 2009?

Last edited by ChrisK; 04-09-11 at 12:14 PM.
Old 04-09-11, 12:15 PM
  #242  
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Originally Posted by cssnms
The octane requirement per the owner's manual is 87 and above, while premium is recommended for improved performance.
I disagree, unless you provide the specific MY.

Last edited by ChrisK; 04-09-11 at 01:10 PM.
Old 04-09-11, 01:40 PM
  #243  
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Originally Posted by ChrisK
I have it.
And what does it say?

Originally Posted by ChrisK
Is there a physical engine difference between MY 2005, 2006, 2007, 2008, and 2009?
None, nada, zilch.
Old 04-09-11, 01:41 PM
  #244  
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Originally Posted by ChrisK
I disagree, unless you provide the specific MY.
See previous post.
Old 04-09-11, 02:26 PM
  #245  
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Interestingly enough a similar pole was taken on the 4 Runner forum and the vast majority there use Regular 87. Albeit some owners are running the v6 engine.

Coincidently there is a quote taken direct from the 4 Runner owners manual and it is verbatim to what is in my GX owner's manual as it relates to octane.

http://www.toyota-4runner.org/polls/...o-you-use.html
Old 04-09-11, 03:23 PM
  #246  
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No other benefit but the occasional increase in performance. Psychologically settling, may be.....


Originally Posted by ALAN553
Trying to understand the purpose to the occasional use of higher octane ? Is there a benefit to the use of it other than increased performance while using that tank of gas? Other than the higher octane, is there something else in there that I am missing?
Old 04-09-11, 03:24 PM
  #247  
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No other benefit but the occasional increase in performance. Psychologically settling, may be.....

Originally Posted by ALAN553
Trying to understand the purpose to the occasional use of higher octane ? Is there a benefit to the use of it other than increased performance while using that tank of gas? Other than the higher octane, is there something else in there that I am missing?
Old 04-09-11, 03:41 PM
  #248  
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Originally Posted by ChrisK
I have it.

Is there a physical engine difference between MY 2005, 2006, 2007, 2008, and 2009?
There is no difference in engines.
Old 04-09-11, 04:59 PM
  #249  
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I tried using regular this past week for our trip to Vegas, we got 20.2 mpg when we hit the hotel 4.30 hours later, i drove around 65~70mph w/ cruise control. honestly, i didn't see any difference when i used 91 either before.
Old 04-09-11, 05:47 PM
  #250  
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Originally Posted by snhrph
There is no difference in engines.
Originally Posted by cssnms
None, nada, zilch.
Thank you.

To have clean running engines Lexus changed the recommendation and made the premium fuel the requirement. The reason - ULEV II

I will take Lexus techs knowledge other cssnms and alike.
Old 04-09-11, 05:49 PM
  #251  
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Originally Posted by cssnms
See previous post.
You generalized and got caught. Do not dig deeper.
Old 04-09-11, 06:57 PM
  #252  
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Originally Posted by ChrisK
You generalized and got caught. Do not dig deeper.
Do not dig deeper into what?! Do you really want to go there?

Fact remains your owner's manual along with the Toyota 4 Runner owner's manual mandates 87 octane and above, no more, no less. "Dig deeper"... LOL

Last edited by cssnms; 04-09-11 at 07:43 PM.
Old 04-09-11, 07:03 PM
  #253  
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Originally Posted by ChrisK
Thank you.

To have clean running engines Lexus changed the recommendation and made the premium fuel the requirement. The reason - ULEV II

I will take Lexus techs knowledge other cssnms and alike.
You can believe whoever you want or whatever literature you want that best supports your beliefs, it's your truck.

I didn't realize we were talking about what option is the most GREEN.

Last edited by cssnms; 04-09-11 at 08:05 PM.
Old 04-09-11, 07:27 PM
  #254  
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Originally Posted by masboy
I tried using regular this past week for our trip to Vegas, we got 20.2 mpg when we hit the hotel 4.30 hours later, i drove around 65~70mph w/ cruise control. honestly, i didn't see any difference when i used 91 either before.
Same here!
Old 04-09-11, 08:07 PM
  #255  
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Originally Posted by cssnms
Do not dig deeper into what?! Do you really want to go there?

Fact remains your owner's manual along with the Toyota 4 Runner owner's manual mandates 87 octane and above, no more, no less. "Dig deeper"... LOL
I guess, since you asked so nice.

Here are facts for you.

Cut and paste straight from 06 GX user manual:

"Select premium unleaded gasoline with an Octane Rating
of 91 (Research Octane Number 96) or higher for optimum
engine performance. However, if such premium type
cannot be obtained, you may temporarily use unleaded
gasoline with an Octane Rating as low as 87 (Research
Octane Number 91)."

Cut and paste straight from 07 GX user manual (same as 08 and 09):

"Fuel types
Use premium unleaded gasoline. (91 Octane Rating [Research Octane Number
96] or higher)"

Stop generalizing. First generation GX goes from 2003 to 2009. It is not 2005 only as you would like to think. From 2006 on the owners manual states different required octane rating as you claim to be a fact.

So yes, let's go there. You made a wrong huge assumption. And that is a fact.


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