better gas mileage with 89 octane
#1
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better gas mileage with 89 octane
Strange
It runs 300 miles ( about 14 gallon everytime, so it end up 21 mpg, 50:50 highway and traffice, same route everyday ) with 89 octane compare to 250 miles with 93. ?????
Anyone had a similar experience? So curious???
Few days ago, I start to realize my car runs somewhat different than before.
Actually my wife is driving our car most of time for commute and shopping. By the way, it runs much smoother than before, quite, and has strong kick on accelerator.
I asked to my wife, what did you do? Answer was surprised, she start to fill 89 octane rather than 93 that we used to fill, she thought it will save some gas money.
Well, fact is fact, truth is truth... I fill the gas with 89 and did test for a week. Mileage is better, smooth, quite... What is going on here......................
![Confused](https://acurazine.com/forums/images/smilies/confused.gif)
It runs 300 miles ( about 14 gallon everytime, so it end up 21 mpg, 50:50 highway and traffice, same route everyday ) with 89 octane compare to 250 miles with 93. ?????
Anyone had a similar experience? So curious???
Few days ago, I start to realize my car runs somewhat different than before.
Actually my wife is driving our car most of time for commute and shopping. By the way, it runs much smoother than before, quite, and has strong kick on accelerator.
I asked to my wife, what did you do? Answer was surprised, she start to fill 89 octane rather than 93 that we used to fill, she thought it will save some gas money.
Well, fact is fact, truth is truth... I fill the gas with 89 and did test for a week. Mileage is better, smooth, quite... What is going on here......................
![Confused](https://acurazine.com/forums/images/smilies/confused.gif)
#3
Senior Moderator
Originally Posted by hemants
lower octane = knock sensors force retard in timing = better fuel economy
but i you wanted the performance of a 4 banger, you should have bought one :-)
but i you wanted the performance of a 4 banger, you should have bought one :-)
#4
ChairmanMaoSaysRTFM
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yes you will get better mileage on 87, but that is because of it's combustion characteristics. it burns differently (as in speed and temperature).
but as we know you will sacrifice performance. in the end it's your call. just be careful with that precious tl
SSTS
but as we know you will sacrifice performance. in the end it's your call. just be careful with that precious tl
![Big Grin](https://acurazine.com/forums/images/smilies/biggrin.gif)
SSTS
#5
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Boy, I'm going to have to buy some of that Virginia 89 Octane gas for my 2003 TLS. When I burn California 89 Octane, my car runs like s@#t! When I burn 91 Octane, it runs sweet!
#6
Registered Abuser of VTEC
I think it's best to use the recommended grade for your engine, not higher and not lower. I've tried all 3 grades available (87,89, and 91) and using 91 nets me both the best fuel economy and power. 87 caused engine knocking so I had to use octane boost to fix that on that tank...
#7
Burning Brakes
Originally Posted by jjlee
Strange
It runs 300 miles ( about 14 gallon everytime, so it end up 21 mpg, 50:50 highway and traffice, same route everyday ) with 89 octane compare to 250 miles with 93. ?????
Anyone had a similar experience? So curious???
Few days ago, I start to realize my car runs somewhat different than before.
Actually my wife is driving our car most of time for commute and shopping. By the way, it runs much smoother than before, quite, and has strong kick on accelerator.
I asked to my wife, what did you do? Answer was surprised, she start to fill 89 octane rather than 93 that we used to fill, she thought it will save some gas money.
Well, fact is fact, truth is truth... I fill the gas with 89 and did test for a week. Mileage is better, smooth, quite... What is going on here......................![Confused](https://acurazine.com/forums/images/smilies/confused.gif)
![Confused](https://acurazine.com/forums/images/smilies/confused.gif)
It runs 300 miles ( about 14 gallon everytime, so it end up 21 mpg, 50:50 highway and traffice, same route everyday ) with 89 octane compare to 250 miles with 93. ?????
Anyone had a similar experience? So curious???
Few days ago, I start to realize my car runs somewhat different than before.
Actually my wife is driving our car most of time for commute and shopping. By the way, it runs much smoother than before, quite, and has strong kick on accelerator.
I asked to my wife, what did you do? Answer was surprised, she start to fill 89 octane rather than 93 that we used to fill, she thought it will save some gas money.
Well, fact is fact, truth is truth... I fill the gas with 89 and did test for a week. Mileage is better, smooth, quite... What is going on here......................
![Confused](https://acurazine.com/forums/images/smilies/confused.gif)
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#8
Burning Brakes
more likely its the fact your no longer running a winter blend fuel
#9
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Originally Posted by T Ho
Ding ding ding! Oxygenated fuels cost 10-15% mileage, on average (this has been my measured experience, in several vehicles).
#10
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Uh may I ask a noob queation?
What is winter blend fuel?
Does it give better performance?
Cuz im experiencing reduction of gasmilage also...
Im always fuelling Sunoco 94 Ultra...
What is winter blend fuel?
Does it give better performance?
Cuz im experiencing reduction of gasmilage also...
Im always fuelling Sunoco 94 Ultra...
#12
Senior Moderator
winter blend has different additives for the cold and stuff. no it usually gives you worse mileage, hence the reason you would see worse mileage in the winter. i wouldnt waste my money on 94, if you can get 91 use that and see how it runs and your mileage
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