Premium Fuel Question
05-30-2009, 06:44 PM
#81
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Agreed. I've not had any good experiences with being forced to go 91, so it's not even been a consideration to try anything lower. I always use BP, Shell, or Sunoco 94. I have also gotten very good results from Hess 93, although they are few around me.
That's actually not how it works; The two octanes do not mix that way chemically. In reality what you have are particles of 87 octane floating next to particles of 93. There is NOT an averaging effect in this mixture, which is also a common misconception. On any given intake stroke you could be taking in significantly more 87 than 93, thereby reducing your detonation and preignition resistance. Since each cycle is individual you can't think of it as an average either. Every combustion cycle has an individual effect. If you only did it for a few emergency tanks of gas over the whole life of the car, I doubt there would be any long-term damage, but don't make a habit of assuming that mixing high and low octanes will result in "acceptable" levels. THAT could be a damaging assumption over time.
That's actually not how it works; The two octanes do not mix that way chemically. In reality what you have are particles of 87 octane floating next to particles of 93. There is NOT an averaging effect in this mixture, which is also a common misconception. On any given intake stroke you could be taking in significantly more 87 than 93, thereby reducing your detonation and preignition resistance. Since each cycle is individual you can't think of it as an average either. Every combustion cycle has an individual effect. If you only did it for a few emergency tanks of gas over the whole life of the car, I doubt there would be any long-term damage, but don't make a habit of assuming that mixing high and low octanes will result in "acceptable" levels. THAT could be a damaging assumption over time.
Last edited by ek9hatch; 05-30-2009 at 06:46 PM.
05-31-2009, 02:31 AM
#82
I did a quick search and didn't find much so pardon this quesiton if I didn't search the right string.
I just went from a 99' to a 08 TL and have a question about fuel. I had to have the plenum removed 2x on my 99' to have the EGR cleaned at a cost of over $500 each. The mechanic (not dealer) told me it was due to poor fuel and thought I should have been using Premium since I was using Regular fuel.
Does anyone know for sure what is the right fuel to run in my 08 that will keep this problem from ocurring again?
I just went from a 99' to a 08 TL and have a question about fuel. I had to have the plenum removed 2x on my 99' to have the EGR cleaned at a cost of over $500 each. The mechanic (not dealer) told me it was due to poor fuel and thought I should have been using Premium since I was using Regular fuel.
Does anyone know for sure what is the right fuel to run in my 08 that will keep this problem from ocurring again?
I guess you missed it on the inside of the gas filler door where it matter of factly states "PREMIUM FUEL ONLY" :P
05-31-2009, 02:34 AM
#83
Agreed. I've not had any good experiences with being forced to go 91, so it's not even been a consideration to try anything lower. I always use BP, Shell, or Sunoco 94. I have also gotten very good results from Hess 93, although they are few around me.
That's actually not how it works; The two octanes do not mix that way chemically. In reality what you have are particles of 87 octane floating next to particles of 93. There is NOT an averaging effect in this mixture, which is also a common misconception. On any given intake stroke you could be taking in significantly more 87 than 93, thereby reducing your detonation and preignition resistance. Since each cycle is individual you can't think of it as an average either. Every combustion cycle has an individual effect. If you only did it for a few emergency tanks of gas over the whole life of the car, I doubt there would be any long-term damage, but don't make a habit of assuming that mixing high and low octanes will result in "acceptable" levels. THAT could be a damaging assumption over time.
That's actually not how it works; The two octanes do not mix that way chemically. In reality what you have are particles of 87 octane floating next to particles of 93. There is NOT an averaging effect in this mixture, which is also a common misconception. On any given intake stroke you could be taking in significantly more 87 than 93, thereby reducing your detonation and preignition resistance. Since each cycle is individual you can't think of it as an average either. Every combustion cycle has an individual effect. If you only did it for a few emergency tanks of gas over the whole life of the car, I doubt there would be any long-term damage, but don't make a habit of assuming that mixing high and low octanes will result in "acceptable" levels. THAT could be a damaging assumption over time.
actually the gas would pretty much disperse evenly in the tank so he would be getting a pretty consistant mixrture of 87/93. This is even more so since the constant motion of the car and fuel through the system would pretty much quarentee a consistant delivery mixed fuel
05-31-2009, 03:57 PM
#84
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actually the gas would pretty much disperse evenly in the tank so he would be getting a pretty consistant mixrture of 87/93. This is even more so since the constant motion of the car and fuel through the system would pretty much quarentee a consistant delivery mixed fuel
05-31-2009, 05:41 PM
#85
Ryan's loving his ATLP TL
I've always put 93 in my TL. Nothing less. I usually go to Mobile. But since frigin almost all the gas stations are Lukoil IDK what to say...
Who owns Lukoil?
Who owns Lukoil?
05-31-2009, 05:58 PM
#86
Banned
actually the gas would pretty much disperse evenly in the tank so he would be getting a pretty consistant mixrture of 87/93. This is even more so since the constant motion of the car and fuel through the system would pretty much quarentee a consistant delivery mixed fuel
06-29-2010, 09:38 PM
#89
I've said this before, and I'll say again.. that Top Tier website is a marketing gimmick.
All fuel when loaded on to fuel trucks leave the same hose. The difference between gas are the additives added by each brand.
But yes throttle body cleaning is a good and necessary process. I remember I use to clean the throttle body on my 2G TL every 20K (I enjoyed taking it apart, lol)
All fuel when loaded on to fuel trucks leave the same hose. The difference between gas are the additives added by each brand.
But yes throttle body cleaning is a good and necessary process. I remember I use to clean the throttle body on my 2G TL every 20K (I enjoyed taking it apart, lol)
I know it's been a while since this post, but do you know of a DIY walkthrough for cleaning the throttle body?
Thanks!
06-29-2010, 09:38 PM
#90
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