Switching from 87 to 91 Octane Gas
01-30-17, 07:56 PM
#4
Like they said, you should have no issues. Gas is gas, octane just essentially means what temperature the explosion that causes combustion to occur occurs at. People that tell you 91 is "better" it's really not, all it does it combust at a different temperature which boosts its performance. 87 gas shouldn't have any negative effect due to the motor just accounting for the time of combustion.
That being said, I've always used the 91 because a few extra dollars doesn't kill the wallet and the extra preformace you get out of it is worth it imo.
That being said, I've always used the 91 because a few extra dollars doesn't kill the wallet and the extra preformace you get out of it is worth it imo.
01-30-17, 09:29 PM
#5
Costco my Friend, Costco....Top Tier fuel, 5 times the required additives, 10-15 cents less a gallon.
The ECU on modern day cars is able to mess with the timing enough to make up for lower octane. The only difference is you won't make as much power because of it.
The ECU on modern day cars is able to mess with the timing enough to make up for lower octane. The only difference is you won't make as much power because of it.
01-30-17, 11:10 PM
#6
Squeeze all the power out of the IS350 as you can! Go 91!
01-31-17, 05:35 AM
#7
Like they said, you should have no issues. Gas is gas, octane just essentially means what temperature the explosion that causes combustion to occur occurs at. People that tell you 91 is "better" it's really not, all it does it combust at a different temperature which boosts its performance. 87 gas shouldn't have any negative effect due to the motor just accounting for the time of combustion.
That being said, I've always used the 91 because a few extra dollars doesn't kill the wallet and the extra preformace you get out of it is worth it imo.
That being said, I've always used the 91 because a few extra dollars doesn't kill the wallet and the extra preformace you get out of it is worth it imo.
It's not just performance, it's gas mileage too. The car burns less gas to get the same power when it can advance the timing. So depending how you drive it might not actually even cost more to run premium.
Where did you read this? I have never heard of a car requiring 93, being that you cannot find it very many places. 91 is the standard recommended premium fuel for virtually every car manufacturer.
Last edited by Viktimize; 01-31-17 at 05:40 AM.
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01-31-17, 05:37 AM
#8
Costco just buys their fuel from refineries like everyone else. Shell, Esso, Petro, etc. But when purchasing raw gasoline, they don't the maufactures additive pack. Are you saying Costco has their own additive pack they add locally at their stations? That would be news to me.
01-31-17, 06:34 AM
#9
It's not just performance, it's gas mileage too. The car burns less gas to get the same power when it can advance the timing. So depending how you drive it might not actually even cost more to run premium.
Where did you read this? I have never heard of a car requiring 93, being that you cannot find it very many places. 91 is the standard recommended premium fuel for virtually every car manufacturer.
Where did you read this? I have never heard of a car requiring 93, being that you cannot find it very many places. 91 is the standard recommended premium fuel for virtually every car manufacturer.
01-31-17, 06:48 AM
#10
According to Lexus it is 91
http://lexus2.custhelp.com/app/answers/detail/a_id/8129/~/which-fuel-grade-should-i-use-for-my-lexus-vehicle%3F
I'm guessing you just tend to get your fuel at a station that doesn't carry anything without Ethanol? Their premiums are always higher octane with that garbage in it. But any normal gasoline is 91 Octane for Premium.
01-31-17, 10:15 AM
#13
I'm pretty well versed at my job. But I still learn things from time to time, there could possibly be some refinery making a 93 Octane full gasoline.
01-31-17, 11:18 AM
#14
^^^^All gasoline currently sold is an Ethanol blended fuel. All the Fuel pumps that I have seen are labeled as containing not more than 10% ethanol, known as E10. And yes, 93 Octane is available all over, but in the west it's a speciality fuel, available at a limited number of stations. 91 Octane is the standard Premium. Not so in the East, there 93 Octane is the standard rating for Premium.
Lou
Lou
01-31-17, 11:48 AM
#15
^^^^All gasoline currently sold is an Ethanol blended fuel. All the Fuel pumps that I have seen are labeled as containing not more than 10% ethanol, known as E10. And yes, 93 Octane is available all over, but in the west it's a speciality fuel, available at a limited number of stations. 91 Octane is the standard Premium. Not so in the East, there 93 Octane is the standard rating for Premium.
Lou
Lou