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Merged premium fuel threads - is higher than 87 Octane needed or useful?

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Old 04-08-19, 08:56 PM
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Originally Posted by bc6152
This subject is brought up every once in a while. The posts are the same, some want to believe that premium fuel is better when it isn't. Some state that they "feel better" using premium fuel in their Lexus
It's the placebo effect. Similar to when you think your car drives better after it has been washed.
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Old 04-09-19, 04:17 AM
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Originally Posted by bc6152
This subject is brought up every once in a while. The posts are the same, some want to believe that premium fuel is better when it isn't. Some state that they "feel better" using premium fuel in their Lexus when the Toyota engineers, who are probably smarter regarding this issue than 99% of our members, say to use 87 octane fuel. It is, indeed, a waste of money.
Sderman states it very succinctly. Use the recommended fuel and that is 87 octane top tier fuel...
Absolutely! I remember an octane thread awhile back where someone posted with 91 octane they thought also their transmission shifted smoother.
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Old 04-09-19, 11:36 AM
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Originally Posted by Freds430
Absolutely! I remember an octane thread awhile back where someone posted with 91 octane they thought also their transmission shifted smoother.
I hear what you are saying, but, I feel that with 91 octane gasoline, the arthritis in my knee is very much reduced.
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Old 04-09-19, 01:26 PM
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Originally Posted by sderman
I hear what you are saying, but, I feel that with 91 octane gasoline, the arthritis in my knee is very much reduced.
I could see that being the case. https://tenor.com/view/the-flintstones-gif-11422386
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Old 07-15-19, 04:43 PM
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Default What type of gas does Lexus say the 19 ES should use?
What type gas does the 2019 Lexus ES use?
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Old 07-15-19, 04:53 PM
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Originally Posted by Edward11
What type gas does the 2019 Lexus ES use?
87 octane or higher.
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Old 07-18-19, 10:30 AM
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Originally Posted by Edward11
What type gas does the 2019 Lexus ES use?
Spend a little more and use 91 premium, better performance, better gas mileage, car will be happier.
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Old 07-18-19, 10:32 AM
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Originally Posted by evan2k
Spend a little more and use 91 premium, better performance, better gas mileage, car will be happier.
Others will say you're just throwing away money.
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Old 07-18-19, 10:38 AM
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Originally Posted by evan2k
Spend a little more and use 91 premium, better performance, better gas mileage, car will be happier.
Proof of this?
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Old 07-18-19, 12:08 PM
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Google. Plenty of websites say you don't need to pay for premium gas if the manufacture doesn't require premium gas.
https://www.cartalk.com/content/premium-vs-regular-1
https://www.truecar.com/blog/premium-vs-regular-gas/
https://www.roadandtrack.com/car-cul...fuel-benefits/
https://www.kbb.com/car-news/should-...s-/2100006472/
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Old 07-18-19, 12:19 PM
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I always laugh when people say to use premium gas on a vehicle not set up to run that. The gas fairy is supposed to magically change the ECM settings to ensure 91 octane improves performance and mpg.
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Old 07-18-19, 01:44 PM
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Interesting aside about gas...

I recently took a 450 mile trip. 225 miles each way. I filled up at the local Shell station with 91 and got 33 mpg on the way there. On the way back traffic was horrible so I stopped to eat and fill up. I could only find a Chevron so I filled up with 91 again and got back on the road. In worse traffic I got 37 mpg on the way home.
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Old 07-18-19, 02:08 PM
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Originally Posted by 95bat
Interesting aside about gas...

I recently took a 450 mile trip. 225 miles each way. I filled up at the local Shell station with 91 and got 33 mpg on the way there. On the way back traffic was horrible so I stopped to eat and fill up. I could only find a Chevron so I filled up with 91 again and got back on the road. In worse traffic I got 37 mpg on the way home.
That's because Chevron has Techron
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Old 07-18-19, 05:10 PM
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Originally Posted by 95bat
Interesting aside about gas...

I recently took a 450 mile trip. 225 miles each way. I filled up at the local Shell station with 91 and got 33 mpg on the way there. On the way back traffic was horrible so I stopped to eat and fill up. I could only find a Chevron so I filled up with 91 again and got back on the road. In worse traffic I got 37 mpg on the way home.
Hybrid? How else would you get 37.
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Old 07-18-19, 05:28 PM
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Originally Posted by evan2k
Spend a little more and use 91 premium, better performance, better gas mileage, car will be happier.
Not true. Lexus ES is engineered to run on 87 octane fuel. You can put 91, 93, 94, even101 octane in your car and it would run the same but you'd just be wasting your money.

BTW, there are numerous threads and pages and pages regarding this question. Did you do a search before posting?
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