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View Poll Results: What type of gas are you putting in your car?
Regular 63 90.00%
Mid-Grade 2 2.86%
Premium 5 7.14%
Voters: 70. You may not vote on this poll

What type of gas are you putting in your car?

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Old 10-23-12, 03:46 PM   #1
Neoxagon
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Default What type of gas are you putting in your car?

What type of gas are you putting in your car?

Do you have the hybrid or conventional gas model?

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Last edited by Neoxagon; 10-23-12 at 04:17 PM..
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Old 10-23-12, 04:27 PM   #2
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well, technically, the engine is the same engine that's been in toyota camry/avalon/rav4/highlander for many years (at least 3+) with some exceptions.

the manual says that you can use unleaded. I plan doing 2 tanks of unleaded and then 1 tank of premium just to keep it "clean"

not necessary, but it's the thought that counts
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Old 10-23-12, 04:31 PM   #3
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"1 tank of premium just to keep it "clean" A quality regular grade fuel with detergent will do the job.
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Old 10-23-12, 05:55 PM   #4
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86K on my wives 2007 ES350. We have run regular its whole life. When I do the oil change I put a bottle of Chevron Tettron in the tank. My wife gets 24 to 26 mpg in town. We get 29 to 31 on the highway with me driving. No reason to run premium gas.
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Old 10-23-12, 06:01 PM   #5
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I am most certainly not an engineer but I don't think premium unleaded is "cleaner" than regular unleaded gasoline.

I have often put premium in the tank looking for better performance but truly can not see either a performance or mileage difference.

I do occasionally put a can of Techron in the tank but again don't see any effect.

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Old 10-23-12, 06:46 PM   #6
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Default gas for lexus es 300 h

Yes, the recommendation is regular gasoline only. I have read about the aktinson engine which is the engine used in this model as well as the toyota camry hybrid. With going into alot of technical detail. This engine was made to handle the lower octane fuel. i even read where some thought that e85 could also work. i would not attempt doe to this not being recommended by the manufacturer. i suggest reading about the atkinson engine. It's very informative.
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Old 10-23-12, 07:48 PM   #7
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Quote:
Originally Posted by simwilson View Post
Yes, the recommendation is regular gasoline only. I have read about the aktinson engine which is the engine used in this model as well as the toyota camry hybrid. With going into alot of technical detail. This engine was made to handle the lower octane fuel. i even read where some thought that e85 could also work. i would not attempt doe to this not being recommended by the manufacturer. i suggest reading about the atkinson engine. It's very informative.

I have not read about the aktinson engine but I would like to.
Can you post a link to the info.?
Thanks, Joe
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Old 10-23-12, 08:45 PM   #8
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Quote:
Originally Posted by Dave Mac View Post
I am most certainly not an engineer but I don't think premium unleaded is "cleaner" than regular unleaded gasoline.

Dave Mac
You are in fact correct. The detergent content is the same for all three grades.

Lou
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Old 10-23-12, 08:55 PM   #9
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Premium fuel burns slower thus is actually a more dirty burn unless you have the proper cyl pressure to use the high octane fuel to it's full or close to it's upper potential so in actually it does the exact opposite as you may think.

In other words anything other than regular is a waste and may be harmful in the long run.
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Old 10-24-12, 02:19 AM   #10
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Quote:
Originally Posted by xspsi6 View Post
Premium fuel burns slower thus is actually a more dirty burn unless you have the proper cyl pressure to use the high octane fuel to it's full or close to it's upper potential so in actually it does the exact opposite as you may think.

In other words anything other than regular is a waste and may be harmful in the long run.
Wow! That's news to me. This thread and your post caused me to Google the subject and came across this article.


http://usatoday30.usatoday.com/money...E=click-refer&

I was one of the ones using Premium because I thought it kept the engine cleaner and because of its anti-knock properties. Back to regular! Thank you!
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Old 10-24-12, 07:46 AM   #11
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That is a good read^^ and almost everyone should read this as it goes in depth on the subject.
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Old 10-24-12, 12:23 PM   #12
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Quote:
Originally Posted by xspsi6 View Post
That is a good read^^ and almost everyone should read this as it goes in depth on the subject.
Yeah ... Moderator(s) ... is this a good candidate for a sticky?
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Old 10-30-12, 07:22 PM   #13
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Quote:
Originally Posted by UncleBen View Post
Wow! That's news to me. This thread and your post caused me to Google the subject and came across this article.


http://usatoday30.usatoday.com/money...E=click-refer&

I was one of the ones using Premium because I thought it kept the engine cleaner and because of its anti-knock properties. Back to regular! Thank you!
+1, very informative article!
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Old 10-31-12, 11:07 AM   #14
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Found another great article:

http://www.caranddriver.com/features/regular-or-premium

Interesting..

"High altitude reduces the demand for octane."

Last edited by Neoxagon; 10-31-12 at 11:27 AM..
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Old 06-27-14, 11:36 AM   #15
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Default ES 350 owners, what gas do you use?

It's still shocking to me that the ES 350 does not require premium gas. My state's gas station sells 87, 89 and 92 what would you guys recommend I use? Would it hurt the car even if I put premium in there?
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Old 06-27-14, 11:36 AM
 
 
 
 
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2013, 300, cars, es, es300h, es350, gas, gess, kind, lexus, octane, premium, putting, type, unleaded

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