What kinda octane gas do you use?

[jhkcam]

i almost always get plus (89)

-Justin

[LD]

<blockquote>quote:</font><hr>Originally posted by jhkcam:
i almost always get plus (89)

-Justin<hr></blockquote>

ditto

[cassie]

I use 87 b/c its the cheapest

BUT if there are really hott guys standing around I hit the 94 button lol

[O2Bsogood]

I always get the higest octane the gas station has. Around here that's usually 91, it's not very often I see 93. But I've ran that in my car for 3 years now, around 40,000 miles and haven't had a problem or anything yet. I hope it stays that way.

[key2emptiness]

i get like 220 mpg on my car, sometimes less depending on how hard i am driving it. i always use 93 but seeing a couple of people responses it would not be bad to drop to mid grade.

[94bird]

<blockquote>quote:</font><hr>Originally posted by Red94Camaro:
I use the mid grade (89) on my 2002 RS. Doesn't need the premium. I know it says it will run at 87, but i figured the 89 would be a little better. Does anyone else use the 89 octane?<hr></blockquote>

I do. [img]graemlins/burnout.gif[/img]

[pyrokilla]

I just buy the cheapest [img]smile.gif[/img]

[Ike]

i hope you understand that you are pretty much wasting your money if you use anything other than what's recommended in the manual on a stock, or mostly stock car.

Although, if you are a "hard" driver, you may be able to fool the car into increasing the timing a bit when you use higher grade gasoline (like on thursday put in about half a tank of high grade and stomp the crap out of your pedal, that way on friday with your 1/4 tank you'll be set for the track). Then on saturday when you fill up with normal grade, the knock sensor will have to do its job and drop the timing. Of course this is probably only worth like 5hp or less, so it's up to you if you think it's worth it.

why would you have carbon deposits on you intake tract? are you following other cars too closely or not using a filter?

Another thing: Be careful when you make blanket statements about gasoline. Not all mixtures are created the same way. For example, higher octane doesn't always slow burn rate (usually they correlate, but not always)

sorry for the rant...but i had to get it all out...

[99CamaroBullet]

My 99 Camaro usually gets filled up when the trip odometer hits 300 miles. I usually have a few gallons left. That stupid check gauge light comes on way early at like 260-280 miles. I would imagine if you have a stock Camaro and a light foot 350+ miles is easy to acheive.
And use 87 or Regular Unleaded Gas with a stock car. The extra money for higher ocatane doesn't do anything that I have seen.
;)

[jhkcam]

Well to all those who think its a waste, i'll remind you that every car is different (engine, mileage, etc.). I used to use 87 all the time, but as the car has gotten a bit older it simply seems to run better with 89. Not to mention i usually only refill once every two weeks or so. I can handle the extra $1. ;) Thats $2 a month difference! thats $24 a year!! [img]graemlins/omg.gif[/img] Sorry. [img]graemlins/rofl.gif[/img]

-Justin

[wolf]

I used to use 89 with my 10 to 1 cr, when my motor gets back together it will be 93 with my 11 to 1 cr :D

[Darknight]

Some higher mileage cars actually raise in compression ratio, due to carbon build up in the combustion chamber, so they can benefit from higher octane. Also, some computers can adjust for higher octane. I have tried the octane test on both my 3.8 Olds and 5.0 Chevy, and found that my money actually goes further with higher octane. Here's how that happens:

"Octane" is a alkane, which is a type of hydrocarbon. It has a chain of 8 carbons surrounded by 12 hydrogens. Very little actual octane is used in gas these days, in part due to it expense. Instead, they use chemicals (many of which are ringed "aromatic" compounds) which have similar properties to simulate the effects of octane. If the properties are exactly the same, it gets a 100 rating, and then lowers from there accordingly. Shorter chains of hydrocarbons have lower octane ratings, but they also have less energy packed into a certain volume. The shorter chains also burn quicker, but produce less actual power because they create a lesser volume of exhaust gases. You can fill up further on cheaper gas, but you'll burn through it quicker. The net effect for the same amount of money is about the same, but I've found that I get a little extra distance in my cars from 92 or 93. The real benefit is a cleaner running car, causing fewer problems down the road.

DK

[UNFNick2k]

<blockquote>quote:</font><hr>Originally posted by Darknight:

"Octane" is a alkane, which is a type of hydrocarbon. It has a chain of 8 carbons surrounded by 12 hydrogens. Very little actual octane is used in gas these days, in part due to it expense. Instead, they use chemicals (many of which are ringed "aromatic" compounds) which have similar properties to simulate the effects of octane.
DK<hr></blockquote>

It's nice to see at least someone else in here took organic chemistry as well

:D

[jhkcam]

<blockquote>quote:</font><hr>Originally posted by UNFNick2k:

It's nice to see at least someone else in here took organic chemistry as well
:D <hr></blockquote>

Me too! :D

[2000fbodyV6]

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