What gas you buy?

[2.5GT]

Im still buying 87. but one of my friend recomend premium for my car, 89 i think.

will the car feel slugish or will it do good?

[Superu264]

I always go for the 89, my "Subie guy" swears the engines run better on it

[Wiscon_Mark]

No. Wrong.

87 and only 87. The ECU is tuned for 87.

Think of it this way:

The higher octane has more pure energy. To get that energy, you need to have a higher compression to get that energy. Our engines are not terribly high compression, so running 89 octane (or higher) would decrease performance, decrease gas mileage, and waste your money. The engine is tuned for 87, go with that.

The reason most turbo motors can tune for other octanes is because they have EM, we don't, so stick with what your ECU knows.

[shazapple]

Tried 91 for a few weeks. It didnt do anything other than give me worse gas milage, and possibly worse performance.

I always use 87. Its what the engine was designed for. If im going to pay extra $$ i might as well save it up and use it towards something more useful

[Huffer]

87 all the way.
I don't use anything higher than is required by manufacturer, and I wouldn't recommend it unless you were running hi-comp pistons, boost, or a nitrous kit.

The higher grades of gas do burn "cleaner", but you get no more bang for buck than if you made sure you cleaned your airfilter, intake and have good sparkplugs.

[Manarius]

87...preferably with MTBE. If not then...well...

Just not grocery store gas. That stuff is like water.

[smoke3006]

87, that's what the manual says to run (yeah I actually read the manual :))

[legacy92ej22t]

I almost always ran Ultra 94 but now they (Sunoco) dropped it to Ultra 93, so that's what I run. Nothing lower will ever grace the inside of my tank.

[Wiscon_Mark]

I almost always ran Ultra 94 but now they (Sunoco) dropped it to Ultra 93, so that's what I run. Nothing lower will ever grace the inside of my tank.

Note:

Matt has a turbo. They require premium fuel.

[belladonna]

great note mark :wink:

[2.5GT]

yeah, ill just stick with 87 then.

and speaking of gas, prices here are almost at $3! :shock:

[Wiscon_Mark]

2.95 here.

Exxon's profits have gone up 50% since Hurricane Katrina :evil:

[losdiosdeverde86]

2.95 here.

Exxon's profits have gone up 50% since Hurricane Katrina :evil:

so has demand from china, india, and us.

demand + supply = profits.

[losdiosdeverde86]

87, that's what the manual says to run (yeah I actually read the manual :))

there was a period of time when it was my bedtime reading and #2 time reading. (i think you get what i mean)

[Huffer]

OT: gas prices here are still way cheaper than the rest of the world.
Yet still the average American is happy to buy gas guzzlers. :x

[losdiosdeverde86]

Yet still the average American is happy to buy gas guzzlers. :x

that tells you that most people only care enough to complain, not act.

thats why i tend to not complain

[smoke3006]

yeah, ill just stick with 87 then.

and speaking of gas, prices here are almost at $3! :shock:


87 around here passed $3 awhile ago :cry:

[JjSwee]

yeah, ill just stick with 87 then.

and speaking of gas, prices here are almost at $3! :shock:


87 around here passed $3 awhile ago :cry:

Same here, I paid like 3.20 last fillup for regular.

[Superu264]

Same here, I paid like 3.20 last fillup for regular.

damn what part of Philly do you live in?

[Wiscon_Mark]

When I was in Philly, the prices in the inter part of the city were absolute murder compared to the suburbs.

[NewGenSTi]

actually the lower the octane number the easier the gas will burn. in all reality you want to use the lowest octane your car can take without knocking. what will happen if you have higher compression or a turbo for that matter is that the lower octane which burns easier will ignite under compression like a diesel, but it will do so before the spark plug sparks causing downforce on a piston that is still traveling up and also causing big damage. they call that detonation or a knock. Pulling timing will fix this to an extent too because it will let the fuel in later and not give it a chance to detonate before the piston reaches tdc. Now the higher octane gas is harder to burn so with the higher compression and spark mix it still fires on time. but you need that extra compression or your car wont be burning all the fuel that is being released into the engine. thus giving lower power, and lower fuel economy.

[GrassyKnoll]

Here's my solution:

I've invested a bunch of money in Exxon. That way, if gas prices suck, then im profitting off of my stock. That way I'm never losing money :)


And trust me it's working. Exxon stock has been kicking ass (ive probably made alot more then im spending on gas :shock: )

[losdiosdeverde86]

Here's my solution:

I've invested a bunch of money in Exxon. That way, if gas prices suck, then im profitting off of my stock. That way I'm never losing money :)


And trust me it's working. Exxon stock has been kicking ass (ive probably made alot more then im spending on gas :shock: )

thats the most intelligent solution to losing money to gas i've heard.


unfortunately it only works if you ALREADY have the stock.

[BlueMan0312]

Here's my solution:

I've invested a bunch of money in Exxon. That way, if gas prices suck, then im profitting off of my stock. That way I'm never losing money :)


And trust me it's working. Exxon stock has been kicking ass (ive probably made alot more then im spending on gas :shock: )

thats the most intelligent solution to losing money to gas i've heard.


unfortunately it only works if you ALREADY have the stock.

If you have the stock then some of the $6 billion(or somthing crazy) profit exxon quoted last year is money in your pocket.

If you don't have the stock whate untill gas goes down and then buy

[losdiosdeverde86]

HAHA GAS.....GOING DOWNthat's funny.

[BlueMan0312]

nice thought though

[jey]

Ever since the boost leak mostly went away I've been putting 93 and 93 only in my car.

[scottzg]

higher octane has less pure energy, it has more resistance to spontaneous combustion. The ECU can pull timing when you are knocking, so 87 is adquite. At least in my car, the top end suffers from running 87, and 89 gets me a touch better mileage. 91 doesnt seem to help me.

Although my 115k engine probably has a bit higher cr due to crap buildup.

[2.5GT]

Im going to buy 89 when my tank is empty. 87 feels really weird when i accerlates. or i could be wrong, but hell, i'll get 89 next time for shits and giggles :P

[2.5GT]

Im going to buy 89 when my tank is empty. 87 feels really weird when i accerlates. or i could be wrong, but hell, i'll get 89 next time for shits and giggles :P

[Wiscon_Mark]

Unless the gas stations are selling watered down (lower octane) than they claim, you're not going to see any improvement.

[losdiosdeverde86]

my wife only puts 89 in her CRv. i want to kill her when she does that. the manual says at least 87. and she says "no it gives me better mileage".

grrrrrrrrrrrr