What type of gas do you pump?

[southside]

Many people say dont pump anything but premium.Other people say whatevers cheapest.Alot of people say you can feel the difference between 87,89,93.I was just wondering what you guys and girls thought and what you think?

[d_day87]

i run premium just for the octane rating.

[OneSlow5pt0]

87,only get 15mpg...so every penny helps

[southside]

87,only get 15mpg...so every penny helpsWhat you drive ?

[gforce23]

I pump all 3 depending on what car I drive.
87 in Accord - 25mpg
89 in Miata - 28mpg
93 in CooperS - 23mpg
93 in gf's (if that counts) Sidewalk - 27mpg
Million octane in gf herself ;) :D

[southside]

Can you notice a difference from when you pump 87 and 93

[WhiteAccord]

87 No Nitrous, 93 Nitrous.

[OneSlow5pt0]

What you drive ?

camaro

[Z32redondo]

93...cause the stickers says to. Its all about how the fuel ignites.

[gforce23]

Umm, if you are explicitly comparing 93 in the MINI and 87 in the Accord, then yeah, there's a world of difference primarily because the Cooper has 25-30ish more whp and is much lighter. I've filled 89 and even 93 in my Accord dozens of times but there is no perceptible increase in perf. or gas mileage.

In most cases, there is no reason to pay for the more expensive high octane gas. Unless your car was designed to make use of 93 octane, using premium won't improve gas mileage or power output.

If your car is explicitly designed to take advantage of high octane gas, use it. If your car has engine knocking problems on 87 (like my Miata due to advanced timing), using high octane gas will get rid of knocking but nothing else.

[southside]

No wonder

[southside]

I always wonderd that my friend has a mustang,he always pumped premium one day he pump regular he said it aint feel the same.Think it was all in his head tho

[gforce23]

I always wonderd that my friend has a mustang,he always pumped premium one day he pump regular he said it aint feel the same.Think it was all in his head tho
It's all about the 'feel good' factor. People assume something's better just because it's a bit more expensive. I've seen people drive more slowly just because they've gotten it into their head that pumping 93 would yield a higher gas average.
No doubt 93 has better ignition properties than 87 but for a non-tuned Mustang, there shouldn't be any difference.

[ATK_Designs]

93 in my G35C
93 in my 94 H22-Accord (25+ mpg while 87 only gets 21-22mpg).
83 in my gf, and she only uses ATK Design's excluse 83 fuel. No others fuel accepted :-p

[allmotoronly]

I use 93 in everything I own, my cars, my jetski, my lawnmower, all my other yard tools.

87 is just dirty compared to 93. Look at the valves on a car that has run 87 its whole life compared to 93. The car that ran 87 will have dirty valves, among other things.

[gforce23]

I use 93 in everything I own, my cars, my jetski, my lawnmower, all my other yard tools.

87 is just dirty compared to 93. Look at the valves on a car that has run 87 its whole life compared to 93. The car that ran 87 will have dirty valves, among other things.
Incorrect. It's the additives/detergents that keep your chamber clean and not the gas molecules themselves. There's a reason why the top-tier gas consortium markets itself that way. Fill 93 octane at a mom-and-pop pump in the middle of bum fcked GA and you won't have a combustion chamber that's any cleaner.

[Barefoot]

93 the truck will spark knock if i run anything less. the the other cars cheap sh!t all day.

[manilikecars]

i run 93 in the ludes but 89 in the teg and civic. don't use the cheap stuff. not worth saving the dollar

[redpanda]

whatever is the cheapest..lol 87

[HatchHero]

93!!!

[Mr. Clean]

93 cause my cluster says so.

[cactusEG]

im broke these days, so 87...

[BlkCD5]

93 back in the day when it wasn't so bad. Had to get the settings changed and now im back to 87. :(

[4eyedbox]

I burn the most expensive cat piss that the state of GA allows at the pumps.

[gforce23]

I burn the most expensive cat piss that the state of GA allows at the pumps.
100 oct?

[Z32redondo]

100 oct?

**** diesels a like $4.30 here and i dont even know where i could find 100 in columbus besides race gas.

[Thighs]

i run 91 in my miata. there actaully is a noticeable difference when i run 89. it feels like im driving into a 35mph wind and my car bogs ALOT below 4g. i PROMISE you can feel it. ill let somebody borrow my car who doesnt beleive me. lol

in high mileage motors, carbon deposits can increase compression and create hotspots, making the fuel more likely to detonate and causes "ping".

[hondaxpurt]

93 b/c high compression yields high octane:cheers:

[gforce23]

i run 91 in my miata.
Where the **** do you find 91 in ATL? All I see is 87, 89 and 93. :thinking:

[allmotoronly]

Incorrect. It's the additives/detergents that keep your chamber clean and not the gas molecules themselves. There's a reason why the top-tier gas consortium markets itself that way. Fill 93 octane at a mom-and-pop pump in the middle of bum fcked GA and you won't have a combustion chamber that's any cleaner.

I never said it was the gasoline itself. I am aware that the higher octane fuels usually have additives. I also don't fill up at mom and pop places. I always fill up at BP.

But, the additives are not the only thing that makes the higher octane fuels burn cleaner. Generally, with higher octane fuels, the fuel is burned more completely, leaving less residue. Carbon is a by product of combustion. When fuels do not burn completely, or are burned in a lack of oxygen, more carbon is produced. Thats why the air/fuel ratio is so important. You want to have the optimal mixture of air to the available fuel so that you get the full reactive power out of the mixture. Not enough air, and carbon is produced in high quantities. Too much air, and too much heat is produced.

Have you ever looked at the piston tops/ valves of an engine that has only ran race fuel? If is was tuned correctly, chances are that the piston tops will be very clean, with no carbon build up.

[Thighs]

Where the **** do you find 91 in ATL? All I see is 87, 89 and 93. :thinking:

hmm... i think your right. maybe im retarded. its 89. lol

[3.5altman]

93 homies

[AnthonyF]

The people who say they can "FEEL" a difference are morons. On my stock engine I run cheap-o. Once i get my good motor i run premium if I am going to run it hard and mid grade for daily driving. If your car is tuned for a specific fuel rating, stick to it. I've been tuned for 93 but have run 101 and C16. Didnt do any difference b/c the car wasnt tuned for it.

-Ant.

[psycho_freke]

93 In my GSR, because it says so on the cluster and on the filler door. I've heard they run like crap off of 87 octane, but I haven't been willing to test that theory. Not quite sure why it's that way though. Anyway, I run 87 octane in everything else in my driveway. I've tried switching to 89 in my sunfire, but never noticed a difference. Since I'm a cheapa$$, I switched back to 87 :)

[Ran]

87 Octane for the GT. It get's around 21-22 MPG so it's not too bad.

[redrumracer]

mid grade my car doesnt seem to like regular

[Thighs]

so your calling me a moron ant? lol

on a high mileage motor, it will make a big difference. especially if your rings are still good. compression will actually increase over time assuming that the rings are still good and it can cause detonation when combined with carbon hotspots.

[BUGMAN]

C 16 here and @ $11.49 a gallon it is starting to suck really bad!

[SixSquared]

I run Chevron 93 in the S14 (when she's deciding to run) and anyone's 87 in the S13. Big bad tahoe gets big bad 87 lol. If the S13 had a motor in better shape, I would probably stick to the Chevron 93 in her as well, but the motor in there is just about shot.

As someone who drives imports, the price difference doesn't make too much difference... an 11 gallon tank, I'm paying anywhere from $2-$5 per TANK difference, depending on how gas stations have their prices setup. A tank lasts me about 2 weeks. The day I'm too broke to afford about $10 a month difference in gas is the day I go back to one car.

[Jecht]

I usually only get gas from QT, but I'll go anywhere if I really really need it. Anyways, I put 93 octane in the Miata, and 87 in both the Jettas because they will run off of just about any **** I put into them. :lmao:

[.blank cd]

87 in the accord. I got more carbon buildup running 93 octane. i had to change my spark plugs and clean out my EGR valve. It cleaned out my injectors tho. I actually saw an increase in MPG running 87 vs. 93. 89 is the most i would run in a low compression motor. BP gasoline FTW BTW

[Andy_013]

87 in the civic now, before 89 when it was cheaper

[southside]

I Took my motor apart recently I pumped 93 most of the time.I had a whole lot of carbon build up on the pistons.

[blazin']

87...

[3kcgt]

premium only... 3000gt

[.blank cd]

I Took my motor apart recently I pumped 93 most of the time.I had a whole lot of carbon build up on the pistons.Cause 9 out of 10 times your car was built to run on 87 octane. Unless you're runnin a B18C or an H22A you dont need it. The rest of the honda motors are low compression, they dont burn that high octane properly. I wouldnt go higher than 89, but at todays prices its really not worth it

[southside]

Cause 9 out of 10 times your car was built to run on 87 octane. Unless you're runnin a B18C or an H22A you dont need it. The rest of the honda motors are low compression, they dont burn that high octane properly. I wouldnt go higher than 89, but at todays prices its really not worth ityea I was wondering that but my compression on my ls is up there with a gsr or b16.

[blackshine007]

I have 3 vehicles...

'86 F150 302 FI 16-17mpg 87
''94 Mazda Protege LX 39-43 mpg 87
'94 Mazda 626 LX V6 27-29 mpg 89 (requires premium)

[Lusos]

I myself run E10, 87 octane fuel in my 3G. In the Isuzu, I would run nothing less than 91 octane (turbo, of course that's why I do it).


I would like to run higher octane fuel in my daily driver (3G), but the price and the fact that the higher octane leads to more detonation, which in turn leads to less fuel economy kind of deturs me from the opportunity.

[eYezs1ck]

93 cuz better in the long run for your engine

[blackshine007]

93 cuz better in the long run for your engine
Better for who's engine (Remember to choose words properly before making a fool of yourself)?

[Demsum]

93 in the 07' GTI. The manual says you can run lower octane, but it also says to expect bad performance if you do. The Euro GTI's run 95 and get better mpg's.

[chituntang]

I believe that most of the car that use a computer to control your car can do some form of timing adjustments. But if your ecu is designed to run 87 max, then it will not advance the timing anymore. Let's say you run like a B18c. If you rung 87, it will retard the timing so much your engine would run like ****.

[southside]

Naw dont think so myfriend has a gsr and He ran 87 didnt feel different to me

[SandM]

i run 93, sometimes i'll throw in a little STP gas treatment here and there

[blackshine007]

I believe that most of the car that use a computer to control your car can do some form of timing adjustments. But if your ecu is designed to run 87 max, then it will not advance the timing anymore. Let's say you run like a B18c. If you rung 87, it will retard the timing so much your engine would run like ****.
Very good, man + however many points my greens are worth are worth nowadays. I'll add on to it. All cars nowadays use a computer to do the most advanced thinking of the things we take advantage of. The computer uses sensors to monitor various systems. Dealing with fuel and timing issues, most advanced engine control systems use a knock sensor to listen for detonation. depending on how loud the knock is, it pulls enough timing to keep you in the safe zone and usually when the computer pulls timing, it adds fuel. And that's not usually a good thing. The computer has a preset program in which if it hears knock, it will add fuel and pull timing to keep the combustion chambers from overheating. Usually, if a car was designed to run on high octane, it's because the chamber can't spin the air quick enough at higher speed to make the power it's supposed to make at it's peak power rpm on regular unleaded. Regular unleaded burns quicker than Premium. That's kinda the short of it. There's more to it than just that but that's more or less the basics of it.

[Uptown401]

ummm...i was told to pump 93 to keep ur motor clean from getting gunk build dups...thats f-ing bull crap...no mater what ur still going to get all that gunk build dup from time to time from shiits going through your intake into IM and into head......from my point of view......if ur compression is low as smuck dont think pumping 93 will actually give u more power on ur rpm band. If your car is a totally high compression motor like 11+ CPR then yes 93 would be a higher octane for a better combustion for the motors performance....!

[Andr3w]

93 with 25 mpg avg.

[csmiths]

well since the accord doesnt have a knock sensor, and its been proven that it runs slower on higher octane, i only pump 87, so it works out. and i have no idea why it runs slower, but there has been too many dynos to prove it.

[RL...]

93...You should all know you get what you pay for. Being cheap costs you in the end...

[superboost]

premium. For better or worse, I'm mapped for nothing but 93. Even 93 with 10% ethanol causes my car to run a touch leaner, and on hotter days, the car will ping. Normally it pings just a bit, but if I try to run anything less than 93, it detonates hard. I learned my lesson after blowing head gaskets, breaking ring lands, and bending two rods in the worst case. Most of the time on ethanol'd gas, it usually just detonates hard enough to break a spark plug or two.

[BKgen®]

87, every penny helps

x2

[integra82786]

higher compression motors should run premium gas, also any car that is built should run premium as well. bad detonation means misfiring, rough idle, rough acceleration, etc.