What gas do you use?
08-09-2007, 09:56 AM
#1
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What gas do you use?
Just curious as to what gas you fill your tank with. I seem to notice a MPG and a performance increase when I us the Super Premium. Has anyone else notiiced the same?
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08-09-2007, 10:27 AM
#9
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Shell V-power all the way! When i bought the car, the stupid dealer filled my tank with 87 crappy no name gas....it was idling rough and when i accelerated, you could hear the valve train timing retarding back! I waited till I used it all up and put in the V-power premium...what a difference, the idle is super honda smooth and no more vavle clatter with more power to boot....
I hate the dealer.....he poisoned my baby....i will never go back for anything other then warranty work and not to the one where i bought...
I hate the dealer.....he poisoned my baby....i will never go back for anything other then warranty work and not to the one where i bought...
08-09-2007, 10:44 AM
#12
My TL can do this, too!
Originally Posted by stillhere153
SUNOCO/SHELL 93 Octane (Whatever is cheaper when I go fill up, usually Sunoco is 2 cents cheaper)
08-09-2007, 11:37 AM
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93 Octane only in the '07 TL-S. No 91 available here 
Texaco or Shell usually. BP occasionally.
Car runs great.
Although in our '02 TL-S we did use 83 and 87 octane with some regularity when prices spiked a couple years ago. Butt dyno said the car lost some oomph, but did not have any mechanical problems. That car is back on 93 Octane now that we've got over the "sticker" shock.
Texaco or Shell usually. BP occasionally.
Car runs great.
Although in our '02 TL-S we did use 83 and 87 octane with some regularity when prices spiked a couple years ago. Butt dyno said the car lost some oomph, but did not have any mechanical problems. That car is back on 93 Octane now that we've got over the "sticker" shock.
08-09-2007, 11:40 AM
#16
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91 Octane in either 76, Shell, or Chevron.
08-09-2007, 11:55 AM
#17
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I always use 93 octane. The car runs great and I average 28 mpg on a whole tank. One gas attendant f'd up and put in regular last week, and she didn't run as good. Acceleration was not as crisp, and I actually got 23 mpg. BTW, no Shells or Sunoco's by me, so I always hit up Exxon.
08-09-2007, 12:03 PM
#18
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IMHO the higher the octane the better in higher performance cars/trucks......even though your car may not perform any better (unless it's tuned for a higher octane or race fuel), it never hurts....cause you never know that the 91 you're getting is really 91 (it could be 87). Obviously it doesn't make sense to buy 109 octane race fuel for $10+/gall on a DD.......unless $$$ is not an issue. LOL
And yes you would get better gas mileage with a higher octane fuel. The same principles apply for how higher octane fuel prevents pre-ignition (detonation)...by burning slower.
And yes you would get better gas mileage with a higher octane fuel. The same principles apply for how higher octane fuel prevents pre-ignition (detonation)...by burning slower.
08-09-2007, 12:16 PM
#19
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BTW - If you do the math, the 91/93 Octane is not *that* much more to pay. It's about $2.50 to $3.00 per tank.
Assume one Fill Up (16 Gals) per week. Thats 16 x 52 = 832 gallions per year.
Assume an an approx diff in the per gallon price of $0.15. 832 x $0.15 = $125 per year.
To insure your car is getting the "right" gas and performance that seems like a small enough price to pay to me. Especially considering it is a ~$35,000 machine.
Assume one Fill Up (16 Gals) per week. Thats 16 x 52 = 832 gallions per year.
Assume an an approx diff in the per gallon price of $0.15. 832 x $0.15 = $125 per year.
To insure your car is getting the "right" gas and performance that seems like a small enough price to pay to me. Especially considering it is a ~$35,000 machine.
08-09-2007, 12:33 PM
#20
I switched to 87 octane. It just seems easier on the wallet. The car with 87
gets 20 mpg in town, and 29 on the highway. Which seems reasonable to me.
I don't race it, so that aspect of performance doesn't bother me, but it is certainly
a few hp drop. I thought about it long and hard before switching to 87, but
the car just isn't driven that much, about 8k miles a year, and I get rid of it for a new one every 5 years. I feel I sold horsepower for cash, but the TL just doesn't do it for me in the HP dept, so I'm not trying to stretch every inch out of it. Maybe I'm just getting old. LOL.
gets 20 mpg in town, and 29 on the highway. Which seems reasonable to me.
I don't race it, so that aspect of performance doesn't bother me, but it is certainly
a few hp drop. I thought about it long and hard before switching to 87, but
the car just isn't driven that much, about 8k miles a year, and I get rid of it for a new one every 5 years. I feel I sold horsepower for cash, but the TL just doesn't do it for me in the HP dept, so I'm not trying to stretch every inch out of it. Maybe I'm just getting old. LOL.
08-09-2007, 12:48 PM
#22
FTW
Originally Posted by wakattack
I switched to 87 octane. It just seems easier on the wallet. The car with 87
gets 20 mpg in town, and 29 on the highway. Which seems reasonable to me.
I don't race it, so that aspect of performance doesn't bother me, but it is certainly
a few hp drop. I thought about it long and hard before switching to 87, but
the car just isn't driven that much, about 8k miles a year, and I get rid of it for a new one every 5 years. I feel I sold horsepower for cash, but the TL just doesn't do it for me in the HP dept, so I'm not trying to stretch every inch out of it. Maybe I'm just getting old. LOL.
gets 20 mpg in town, and 29 on the highway. Which seems reasonable to me.
I don't race it, so that aspect of performance doesn't bother me, but it is certainly
a few hp drop. I thought about it long and hard before switching to 87, but
the car just isn't driven that much, about 8k miles a year, and I get rid of it for a new one every 5 years. I feel I sold horsepower for cash, but the TL just doesn't do it for me in the HP dept, so I'm not trying to stretch every inch out of it. Maybe I'm just getting old. LOL.
You do know you save around 100-200.00 per year by changing from 87 to 91/93?
08-09-2007, 01:25 PM
#24
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Why not just use recommended?
If the engine is rated for 91 octane, why would you put anything other than the lowest available octane gasoline above 91? Octane is not a rating of "better" gasoline, it's simply a rating of a gasoline's ability to avoid Knock, that being ingition under compression prior to the spark plug kicking it off. Sure, modern engines can dynamically detune if they detect knock, so you can put in lower octane gasoline, but then you're operating out of the sweet spot of the engine design. Conversely, super high octane gasoline (say, using 95 when 92 is available) is just throwing away money; you're not going to get better performance, milage, or whatever as your engine should simply not knock with any gasoline over 91 octane, but there's no more chemical energy in gasoline at higher octanes.
Just put in the lowest octane gasoline of equal to or better than 91 octane, and you car and your wallet should both be in their optimal zones.
Just put in the lowest octane gasoline of equal to or better than 91 octane, and you car and your wallet should both be in their optimal zones.
08-09-2007, 02:43 PM
#25
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Originally Posted by wakattack
I switched to 87 octane. It just seems easier on the wallet. The car with 87
gets 20 mpg in town, and 29 on the highway. Which seems reasonable to me.
I don't race it, so that aspect of performance doesn't bother me, but it is certainly
a few hp drop. I thought about it long and hard before switching to 87, but
the car just isn't driven that much, about 8k miles a year, and I get rid of it for a new one every 5 years. I feel I sold horsepower for cash, but the TL just doesn't do it for me in the HP dept, so I'm not trying to stretch every inch out of it. Maybe I'm just getting old. LOL.
gets 20 mpg in town, and 29 on the highway. Which seems reasonable to me.
I don't race it, so that aspect of performance doesn't bother me, but it is certainly
a few hp drop. I thought about it long and hard before switching to 87, but
the car just isn't driven that much, about 8k miles a year, and I get rid of it for a new one every 5 years. I feel I sold horsepower for cash, but the TL just doesn't do it for me in the HP dept, so I'm not trying to stretch every inch out of it. Maybe I'm just getting old. LOL.
Originally Posted by lusid
You do know you save around 100-200.00 per year by changing from 87 to 91/93?
08-09-2007, 05:49 PM
#28
Racer
93 ...Don't ever goes below 91. ITs your car , do a little research. IF you do that much of calculation. why dont you stop go shopping for a weak, then your car is up in performance. 
08-09-2007, 05:59 PM
#29
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I use Chevron or Shell gas, 91+ only.
I read a thread somewhere on the forum stating that the extra MPG gained by using premium gas actually EXCEEDS the additional costs of using premium gas.
So in essence, that thread claims you actually save money by using premium gas.
I read a thread somewhere on the forum stating that the extra MPG gained by using premium gas actually EXCEEDS the additional costs of using premium gas.
So in essence, that thread claims you actually save money by using premium gas.
08-09-2007, 06:30 PM
#30
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i accidentally put in 87 octane a couple of days ago and then bought the octane booster '108 plus' and did seem to make a difference once it mixed in with the lower 87 fuel. i did notice better hp and mpg versus just running the 87 fuel.
08-09-2007, 07:09 PM
#31
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I use mostly BP (3% cash back credit card) and Exxon (5% goes towards college for kids through Upromise) Premium only. Engine knocks on anything less.
08-09-2007, 08:51 PM
#34
Suzuka Master
whatever I can siphon out of the cars in the hood, or drain from the mower
08-09-2007, 08:57 PM
#35
Fill in the blanks...
Somebody please...
The higher the OCTANE rating, the _________ volitile the fuel.
ANSWER: LESS
Why do we do this every month?
I'll explain it slowly...
The more octane you have the LESS volitile the gasoline. The more octane, the more resistance to ignition. How can you make more fuel economy on higher octane? YOU CAN'T.
Octane does NOT change the burn rate of the air fuel mixture. It does resist the onset of ignition and the more octane you have the less KNOCK CONSTRAINED your engine will be.
So high compression ratios, supercharged engines, turbocharged engines and nitrous injected engines all require high octane fuels. Higher octane DOES NOT make more power...spark timing and compression do.
A-Train
The higher the OCTANE rating, the _________ volitile the fuel.
ANSWER: LESS
Why do we do this every month?
I'll explain it slowly...
The more octane you have the LESS volitile the gasoline. The more octane, the more resistance to ignition. How can you make more fuel economy on higher octane? YOU CAN'T.
Octane does NOT change the burn rate of the air fuel mixture. It does resist the onset of ignition and the more octane you have the less KNOCK CONSTRAINED your engine will be.
So high compression ratios, supercharged engines, turbocharged engines and nitrous injected engines all require high octane fuels. Higher octane DOES NOT make more power...spark timing and compression do.
A-Train
