what type of fuel you guys run on? Options

[pr_caralho]

Like it says 87, 91 or more? whats better for performance or gas milage?

[Supersprynt]

93 because I have to.

You will hear people say they feel better performance or they see better gas mileage, its really negligable.

[Mr_E]

98 Ron.

If I could get Jap spec 101 I would.

[lagos]

94 ..the highest i can find in my area

[Coomer]

I run 92 because I have to. I've experimented with toluene mixed in with my gas but didn't notice a difference.

[Benevolence]

I swear I get better mpg if I use 91 rather than 87... I drive the same way (agressive) but with 87 after about 5 tanks fill ups everyone it average 20-21 give or take a few tenths consistently with 91 I averaged 23-24... huge difference? naw but if I feel better paying 20 cents more a gallon Ill take it.

[Supersprynt]

94 ..the highest i can find in my area
[right][snapback]261226[/snapback][/right]

Sunoco? They stopped selling 94 over here

[lagos]

yep sunoco is the only place with 94 around here.

[chucho]

93 here, seems to idle better w/ the higher octane

[Jen]

I use 89. The middle stuff.. *shrug*

[BlackCelicaGT94]

im broke 87 octane unless im at the street races and i dont want people knowing im a fake! then its 92. haha j/k! kinda! :-P


i cant really justify using higher octane when im not running ANYTHING under the hood!

[Digndoug]

im broke 87 octane unless im at the street races and i dont want people knowing im a fake! then its 92. haha j/k! kinda! :-P 


i cant really justify using higher octane when im not running ANYTHING under the hood!
[right][snapback]261299[/snapback][/right]

Higher octain will not doing anything unless your engine needs it or is tuned for it. I use basic 87 because thats all i need.

I have heard that using higher octain will help reduce valve knock with older/high milage cars. but still is point less.

[Insanity-74]

98 Ron, sometimes with Octane booster in aswell

[25thcelica]

I use 93 just cause. I mean I don't mind pay the extra 15-20cents. and I seem to get better fuel economy out of the higher grade gas

[Sev408]

87 is the way to go, anyone remeber in the DC area when gas was like 69 cents and i could fill my tank for under 10bucks

[94GT]

I always use premium. Depending on altitude, it's either 91 or 92 for me. In Colorado it's 91 and Cali is 92. Our regular out here is 85.

[Drocay]

dude, i remeber those were the days, Sheetz came and then WAWA gas was so cheap.

[thedevilmaycrie]

91 but thats only because its the highest you can get here... without going to california speedway to fill up for 5.00 a gallon

-DMC

[pr_caralho]

I know I feel sorry for some of you guys in the states, what is it now 2.29? damn........

[Jen]

It's like 2.21 here. I hate it.. because I have no money.. putting $5 in gets like what.. 2 gallons? That's nothing for me. My school is 30 miles away.

[orvillescelica]

the cheapest one... which is usually 85-87, depending on where you go.

Like Natallie, i cant justify putting anything else in since there is no need to. Plus im cheap!

[juBz86]

89. but i might start using 93

[CheesyLobster]

87, thats what the car is made for, and i dont notice a difference when i put in higher.

[ArizonaRed]

I pay about 2.09 per gal for 89 which is what i usually use. They have 103 where im at but i dont need that high. We have lotsa rally/drag in my area but ppl hate rice here. Gas drops down to 1.79 here on occasion. I got 1.59 around christmas time.

[97sccelica]

91 plus water injection

3.9GPH nozzle and 100psi pump

this is on my wrx

[maikl]

i usualy go with 95 and some times 100 but for drag i will use 110 with a new program on the dyno!

[popstar]

the highest i can find !
i never believe what the pumps say over here
but i hope it's around the 95 area

[Mr_E]

I know I feel sorry for some of you guys in the states, what is it now 2.29? damn........
[right][snapback]261423[/snapback][/right]

As discussed, I have wet dreams about fuel @ 2.29 a gallon.

[Clipsetuner]

I remember when I first filled up the celica, November 2003 bone dry and she wouldent take 20$ haha. In my old 4th gen (sold her saturday) she got great gas millege but with prices now took 30$ or more a tank.

November 2003 1.20ish
March 2005 2.17 cheapest

DTE

[shin]

i've always been using 93

[Consynx]

87-89
i'm trying to kill the spark plugs from time to time so i have a reeason to take out a loan

[Insanity-74]

Will be running on 100ron at the GT4oc meet tomorrow. wayhayyyy!!!!

[wuhukf]

I read in a consumer report experiment that you're supposed to put in what your car's manual says to put in. They said if your car is meant for 87 and you put in 93 or whatever else, it doesn't do anything and might hurt the engine because it wasnt designed to handle the higher octane. I don't know whether that's true or not, but I put in 87 cause its the cheapest.

[Consynx]

it true, hence my comment

[Insanity-74]

Yes its pretty much true if your car is still standard. certain mods change things a bit, more pertinant to turbo cars then N/A. JDM cars are sposed to run on 101ron, never had that high an octane rating yet, couldnt afford the combination of the UKs excesively high petrol costs (£60 to fill the tank, thats about $90 - $100 in your money) and octane booster (£10 a can)

[creis]

92, I think it runs better, but its probilby in my head. it really does not make much diff the price change is hardly more then a few bucks in the end anyway, but since I drive an hour to work and back every day, 5 days a week (or more) I figure I owe it to her.

This post has been edited by creis: Mar 24, 2005 - 6:21 PM

[pr_caralho]

I feel sorry for anyone that owns suv's, those mofos eat gas like an etheopian in a all you can eat buffet frenzy (j/k)

[x_itchy_b_x]

93 octane and sum Booster sometimes to clean carbon out.
i filled my tank for $30 at 2.27 a gal

[popstar]

I know I feel sorry for some of you guys in the states, what is it now 2.29? damn........
[right][snapback]261423[/snapback][/right]

As discussed, I have wet dreams about fuel @ 2.29 a gallon.
[right][snapback]261653[/snapback][/right]

Hmmm

and i worry about $25 for three quarters of a tank

[Bigmeanbulldog55]

I've never used anything but 93 in any of my cars. Prices are getting a little high for your average college student. As for Europeans complaining about your gas prices compared to ours, shut it, you have better cars and you always will. Our low gas prices is all we have. Leave us alone with our complaining about them rising.

[GT4WRC]

98RON all the time.

Occasionally run AVGAS in my rally car, but not too often as the lead content has a tendancy to screw up the lambda sensor. Will be getting a different set-up with the rebuild so I can run AVGAS full time.
Gary

[Fietsbel]

V-power, that's Ron100 in germany but Ron97 in holland. It's okay, nothing special or turbo boosting the engine
That is 1.60 euro a liter

This post has been edited by Fietsbel: Mar 26, 2005 - 5:01 PM

[BonzaiCelica]

The highest we have in Cali is 91 octane = 95 ron.

93 octane = 98 Ron
94 octane = 100 Ron
High Compression Dual/Single VVT-i Beams and 3SGTE motors require 100 ron, I believe you can run 98 ron on a 3sgte or 3sge at its full potential in stock form. So an alternative is toluene.

Now, toluene is a natural byproduct of manufacturing gasoline from crude oil, so adding It to your gas tank wont have any adverse effects.

As of 1/1/2017 Toluene is $125 for a 5 gallon at Walmart! YIKES

“Q: Will toluene damage my engine or fuel system?

A: A 5 or 10% increase in the aromatic content of gas will most likely be well within the refining specifications of gasoline defined by ASTM D4814, which specify an aromatic content of between 20% and 45%. What this means is that if the 92 octane gas that you started off with had an aromatic content of say 30% and you increased it by 10% to 40% you would still be left with a mix that meets the industry definition of gasoline. So the above question would amount to: "Will gasoline damage my engine or other parts of my car?"

Even in the unlikely event that the 92 octane gas has an aromatic content of 45% the resulting mix would still be within the bounds of gasoline sold in other countries.”


“Mindful of the evil reputation of octane boosters in general, toluene is a very safe choice because it is one of the main octane boosters used by oil companies in producing ordinary gasoline of all grades. Thus if toluene is indeed harmful to your engine as feared, your engine would have disintegrated long ago, since ordinary pump gasoline can contain as much as 50% aromatic hydrocarbons.

-Toluene is a pure hydrocarbon (C7H8). i.e. it contains only hydrogen and carbon atoms. It belongs to a particular category of hydrocarbons called aromatic hydrocarbons. Complete combustion of toluene yields CO2 and H2O. This fact ensures that the entire emission control system such as the catalyst and oxygen sensor of your car is unaffected. There are no metallic compounds (lead, magnesium etc), no nitro compounds and no oxygen atoms in toluene. It is made up of exactly the same ingredients as ordinary gasoline. In fact it is one of the main ingredients of gasoline.
-Toluene has a RON octane rating of 121 and a MON rating of 107, leading to a (R+M)/2 rating of 114. (R+M)/2 is how ordinary fuels are rated in the US. Note that toluene has a sensitivity rating of 121-107=14. This compares favorably with alcohols which have sensitivities in the 20-30 range. The more sensitive a fuel is the more its performance degrades under load. Toluene's low sensitivity means that it is an excellent fuel for a heavily loaded engine.

Toluene is denser than ordinary gasoline, Thus combustion of toluene leads to more energy being liberated and thus more power generated. This is in contrast to oxygenated octane boosters like ethanol or MTBE which contain less energy per unit volume compared to gasoline. The higher heating value of toluene also means that the exhaust gases contain more kinetic energy, which in turn means that there is more energy to drive turbocharger vanes. In practical terms this is experienced as a faster onset of turbo boost.

Chevron's 100 octane aviation fuel shows that toluene comprises up to 14% alone and is the predominant aromatic hydrocarbon.

Sunoco 260 GTX has 35-45% Toluene and 50-60% Alkylate and that has a octane rating of “98” (R+M)/2. That’s a race fuel

I also found that 260GT with ethanol has 30-40% Toluene and 80-85% Alkalyte. The Toluene rating dropped 5% because the Ethanol added was 5%, so less Toluene was needed. That is a street legal octane rating of “100” (R+M)/2. And that’s a street legal fuel.

Alkylate(can't be bought) is a high-octane, branched hydrocarbon mostly made of isooctane and isopentane. Isooctane has a octane rating of 100 (R+M)/2

Toluene(sold as Toluol) occurs naturally at low levels in crude oil, but is separated into pure form after the processing of crude oil.

The toluene content is controlled by OSHA, but the alkylate content is controlled by Sunoco, so they can add as much as they please, but can’t add as much toluene. Because toluene is a byproduct of alkylation, and is readily available, we can add that to our gas and save money while getting a higher octane rating.

(whatever octane you normally use)*(gallons of it) + (114)*(gallons of it) / Tank capacity = New octane rating

Integra have 13.2 gallon tank. A GSR with 12:1 CR and TODA VTEC killer cams, ITB’s,etc. And your tuner said you need 100 octane. Now, you can go buy it for $8.50-10 bucks a gallon or make it using 9.2 gallons of 93 octane and 4 gal of toluene.

Using the formula: (93*9)+(114*4.2)/13.2 = 99.68 (R+M)/2

13 gallons of 100 octane is $104 @ $8/gal
13 gallons of 100 octane is $130 @ $10/gal
9 gallons of 93 octane @ $3/gal is $27
4 gallons of toluene at $15/gal is $60
Total is $87
$87 or $104/$130? Which is better for you to get the “same” octane rating?

By “same” I mean this:

“You don't know for sure if you are really getting what is being advertised. You should find out if the fuel inspectors verify the actual octane of the racing gasoline in addition to ordinary gasoline. If you paid $3/gallon and only got 94 or 95 octane instead of 100 octane you may conclude erroneously that your car does not benefit from octane boosting.

You don't know what octane boosters are used in racing gasoline. Worst case scenario is buying leaded racing gasoline without knowing it. Unleaded racing gasoline may still contain damaging octane boosters like MMT or methanol. A very high alcohol content will lead to fuel line erosion, accelerated fuel pump wear, very poor fuel economy and possibly lower performance, as alcohols have a less impressive MON rating than aromatics.

It takes smaller quantities of toluene to achieve the same octane boost comparing 100 octane racing gas.

Racing gas tend to have higher markups being of interest to the performance minded enthusiast and is very likely to be more expensive to buy and use long term than toluene (paint thiner).


This post has been edited by BonzaiCelica: Mar 14, 2017 - 7:35 PM

[delusionz]

Good info, Can anyone confirm this "Faster onset of boost" from using toluene on a JDM 3S-GTE?

[Tony-B]

Maxol E5 (99 octane, so they say) and 360mls of silkolene pro boost per tank.

[BonzaiCelica]

ahemm so anybody else got anything to say about this thread... yay or nay for the toluene mixing

[BonzaiCelica]

uhh anybody, somebody reply to this thread plz. i dont want it to die, is it me or does it seem like i always get the last word to a thread that isnt so popular...

[Rusty]

I think its a good thread, since I was wondering how people where running 18psi and had 93 in.

personally I wounldn't use shells vpower petrol (well from NZ anway)

This post has been edited by Rusty: Sep 4, 2009 - 2:52 AM

[delusionz]

My GT4 responds best to BP Ultimate (98 RON) and Mobil Synergy 8000 (97.5 RON)

When I have mostly 95 in the tank (95 is more readily available in my area) and I punch the gas pedal, the engine slightly hesitates when reaching full boost, It feels as though the knock sensor is doing its job. Hardly ever notice this with BP Ultimate.




With the 3S-GE in the ST202 the difference between 95 and 98 is negligible, but both are alot better than 91.

[BonzaiCelica]

ok thanks. but i was wondering if any buddy in CA has mixed toluen into their gas tanks. Ill guess ill just have to ask at the next meet we have in October....

Urbandork and eggman40 are the only ones that have 3rd and 2nd gen 3sgte...

This post has been edited by BonzaiCelica: Sep 3, 2009 - 12:26 PM

[legalkid86]

i run on bacardi 151..lol

[808celica]

me its 93 octane > food. i can always eat at home so gas comes first.

[Rusty]

please dont turn this thread into 'I run this gas in my celica'

[THE20V]

Does anyone use the ethenol mixed fuel ?

[presure2]

Toulene works. But @ 10$ a gallon or more, prolly better off throwing in a couple gallons of race fuel.
Dustin ( batman722) runs 93 in his 3rd gen swap, without issue, so I would imagine the amount of ra e gas it would take would be small.... Just a matter of doing the math to figure it out

[BonzaiCelica]

ya but thats just us. here in California, the highest octane we get is 91

[BonzaiCelica]

is there any sort of device that you can plug into your gas tank that will tell you how much you have. It will tell you the number of gallons that are left. Cause in order to calculate the right mixture of toleuene with gas, you would need to know how much gas you have in your tank before you fill up.

how much is the cost? i have yet to find out but i sourced this from the link that i posted earlier.

$125 for a 5 gallon tank of Toluene at Walmart as of 1/1/2017. EXPENSIVE

here's the celica formula for mixing toluene:

Toluene = R+M/2... 114 octane

(13 Gallons of 91 octane @ 3 gal) + (2 gallons of toluene for $50, = 15 gal to get 94 octane. Total Cost $89

calculator found here http://www.serioussolutions.com/evo/octcalc.htm



This post has been edited by BonzaiCelica: Mar 14, 2017 - 7:58 PM

[SwissFerdi]

Hey guys, kind of reviving this since I don't feel a new thread is necessary. I just accidentally filled up with premium (not sure of the grade, it's at least 93) since the pump apparently switched the position of the grades and I automatically went for the left-most pump, which is usually 87. This can't harm anything right?

[Culpable04]

yes, damage is already done




to the wallet.

besides that, no, unless you were on a tight budget and the extra bucks spent will be needed for later meals on the week.

[SwissFerdi]

I thought so, just checking. Thanks man. Now to see if the ol' butt dyno notices any difference.

This post has been edited by SwissFerdi: Oct 22, 2009 - 1:44 PM

[CastrolCelica]

Just curious, but will any grade but 87 (what the car is made for and what I put in) hurt the car over prolonged use? I can understand it not affecting it with one fill up, but what's the real advantage of putting in a higher octane if it's not really doing anything?

Lastly, and only slightly related, I accidentally put about one quarter of 5W 30 instead of 10 (got one that was 5w 30 by mistake because it was with the 10W 30 bottles and I didn't notice). By the time I noticed, of course almost half of the 2 quart bottle was poured in. Besides a bit of a shutter at start up this morning, I haven't noticed any performance issues. Am I alright?

PS: I was so low, I ended up putting 2 quarts of 10W 30 in along with the 1 quart of 5W 30... which I'm kinda hoping balanced it out. Sorta.

[yarik83]

I use 93 octane. Full tank of gas gets me exactly 280 miles and if I drive in a straight line I can squeeze it to 290

[SwissFerdi]

Just curious, but will any grade but 87 (what the car is made for and what I put in) hurt the car over prolonged use? I can understand it not affecting it with one fill up, but what's the real advantage of putting in a higher octane if it's not really doing anything?

From what I know, the car's recommended fuel is fine to use, and 6GC's take regular. However, using a lower octane than recommended can cause knock and negatively affects performance and mileage.

[Detatch]

i have 2 cars.

94 Saturn SC1 - gets 46mpg, and i use premium (93) all the way. i've noticedthe milage is SLIGHTLY better, and it does give the car a little more power... main reason i started putting premium in this thing was because i need it in order to make it up hills.... in all honesty, it's got somewhere between 160,xxx-200,xxx miles on, and running the LK0 SOHC engine, only 85bhp.... havn't been home in 10 months, not sure how often my mom drive it.

94 Celica GT - not quite sure, havn't been in 10 months and only owned her for 3 thus far... but i told my mom while she's "jogging" the cars to only use PREMIUM ONLY because it's a little easier on the engines, seems cleaner (maybe it's just me?), and call me crazy.. i could almost SWEAR my cars always have something of a "personality" and "memory" of their own...

[azian_advanced]

the higher octane is meant for cars running turbo or in naturally aspirated high compression engines. the higher octane only helps prevent knock under high pressure. a 5sfe is designed to run with 87 octane. no need for 89 or 91 as these have relatively low compression. instead, the extra $$ you save every fill can be put towards something more useful like maintenance and repairs..

[paul_gt4]

I'm using 101 octane atm, 97 Octane with Millers +4 for every 20litres, costs a fortune to fill the car, last fill with 3 bottles of octane booster cost me £128 works out at $212.08 at todays rate and that was sunday past i filled.

[Artega]

just Esso 91 octane here

I'm getting about 13L/100km is that about right for gas mileage?

[CelicaST_CALI]

8-7

[BonzaiCelica]

hmm still debating whether to mix toluene or racing fuel. but at the same time racing fuel is leaded and all cars require unleaded fuel only. darn So cal

i know that adding toluen to achieve a level of 93 octane wont be the same as 93 octane that you pump from a gas station but what else can i do, have a drum of 93 octane shipped to my house every month...

[RedSun]

I'm using regular 95 octane fuel they have in Poland :-)

[samir0189]

since we're on the subject of fuel and additives etc, does anyone use anything in their fuel?

I sometimes put some marvel's mystery oil in my tank, and i find i get a noticeable increase in MPG, no power increases though..

with 87oct and 4-6 oz of this stuff, i see.... an avg of 20-40 miles more per quarter tank.

This post has been edited by samir0189: Nov 6, 2009 - 4:49 PM

[Wintersun]

I run my JDM GT4 on BP Ultimate 97 Ron or Shell 98 Ron here in England, UK

[SwissFerdi]

since we're on the subject of fuel and additives etc, does anyone use anything in their fuel?

I sometimes put some marvel's mystery oil in my tank, and i find i get a noticeable increase in MPG, no power increases though..

with 87oct and 4-6 oz of this stuff, i see.... an avg of 20-40 miles more per quarter tank.

Sure that's not just you being a little more careful with your foot? 20 miles is an easy fluctuation.

[samir0189]

nope sure is not. i am not careful with my foot** lol

[delusionz]

For JDM cars as close to 100 RON as possible.

Even for the 3S-FE ST202, premium has more response and better milage.

I put that down to the OEM ignition maps of JDM ecus being that Japan premium is 100 RON which is what we call race fuel as our highest premium pump gas is only 98 RON (NZ.)

[Agent21]

When I can I run the 98 Sunoco GTX Nextel Cup stuff. (NOTE NASCAR gas has ZERO (it's like .07%) oxygen in it) Noticeable increase in at least response but probably also power. MPG usually runs like 29 on my Celica no matter what I do (Auto GT).

Most of my fellow racers also note that no matter make or model the Sunoco GTX stuff will get you better mileage so there is something in the zero oxygen.

This post has been edited by Agent21: Nov 7, 2009 - 10:05 PM

[BonzaiCelica]

California only carries 91 octane (which isn't suffice for 3sge/3sgte) as apposed to other states with 93 octane. So I came to some conclusions:

Then there is Torco Accelerator. Its a concentrated racing fuel that is way better than octane booster (that only raise octane level by 0.7 - 1 point)

Now as far as the torco accelerator additive, Ive read that it is not the best thing to put in your car becuase it will clog your fuel injectors if you use it constantly. They sell them in (6) 32 oz bottles for $125. Pour 20 oz into gas tank and fill up 14 gal on the celica = 94-95 octane. here's the chart mixture http://torcoracefuel.net/2-docs/accelerator-blend-chart.gif

here is a discusssion about the long term effect of TORCO :

http://www.golfmk6.com/forums/showthread.php?t=66976

This is also the top 5 octane boosters as of 2017 http://mycarneedsthis.com/the-best-octane-...rs-and-reviews/

This post has been edited by BonzaiCelica: Mar 14, 2017 - 8:28 PM

[terbear4god4life]

shell premium at 2.99 a gallon owch.

[Mstoochn]

Chevron 97 at the pump, 1.31$ a liter

[BonzaiCelica]

wow great guys. so you listed gas prices... and this helped me out with...??

[BonzaiCelica]

anybody?!!

[schmooot]

im broke 87 octane unless im at the street races and i dont want people knowing im a fake! then its 92. haha j/k! kinda! :-P 


i cant really justify using higher octane when im not running ANYTHING under the hood!

Higher octain will not doing anything unless your engine needs it or is tuned for it. I use basic 87 because thats all i need.

I have heard that using higher octain will help reduce valve knock with older/high milage cars. but still is point less.

so I should be using the highest I can get for a GT4 then right? even stock

[Stambo]

All octane is, is the ability to resist heat. There really is no "power" or mpg upgrade in getting lets say 87 octane to 93. Thats why turbo'd cars and high compression cars take a higher octane so the fuel mixture doesn't ignite before the plug fires.

[windowlicker]

the lowest grade, cause there is no use spending more on gas when this automatic 7afe isn't gonna see any benefits. i usually stick with cheveron or mobil, shell if there is nothing else. i avoid arco like the plauge since they water down their gas. on my srt4 though, i always ran 91 or better. turbo cars love the premium.

[DKGT4]

I use 91 octane from Shell. Supposedly really good fuel for your vehicle. Even for vehicles with forced induction. I also heard that Shell's Nitrogen enriched gas is really good for the engine as well. Helps to prevent the build up of "gunk".

I also use 94 Octane from Husky.

[BonzaiCelica]

ya you should be using the highest grade of gas for the gt-4. Hmm i guess nobody knows anything about torco accelerators, now do they?

[Jeunesse]

Bonzai, Sorry I didn't read the whole thread, but why do you need a higher octane gas on your 7AFE? Just curios, your profile said you have an ST whick takes the regular gas, unless you now have a swapped 3SGTE then I can understand why you're asking all these questions.

[SwissFerdi]

^ He's BEAMS swapped.

[Jeunesse]

ok. Good to know. 91 AKI is a bit too low for a 3sge. Sorry can't help you with the accelerators.
Move to other state you obviously live in the wrong state. Even a Canadian like me knows that. lol

j/k

[BonzaiCelica]

haha im doing 3sge beams swap! in the summer, if all goes as planned.

ha ya southern California has such nice weather! but the gas and smog laws suck!

This post has been edited by BonzaiCelica: Jan 14, 2010 - 3:47 PM

[nics]

I use 91 octane from Shell. Supposedly really good fuel for your vehicle. Even for vehicles with forced induction. I also heard that Shell's Nitrogen enriched gas is really good for the engine as well. Helps to prevent the build up of "gunk".

I also use 94 Octane from Husky.

same! premium shell gasoline.

i used to use the 87 but switch to 91. it prevents engine knocking.

also toyota said 87 or higher -> higher the better

[mak5603]

I use 91 octane from Shell. Supposedly really good fuel for your vehicle. Even for vehicles with forced induction. I also heard that Shell's Nitrogen enriched gas is really good for the engine as well. Helps to prevent the build up of "gunk".

I also use 94 Octane from Husky.

same! premium shell gasoline.

i used to use the 87 but switch to 91. it prevents engine knocking.

also toyota said 87 or higher -> higher the better

lol, exactly what the advertisement says. but i like shell too haha 91 or better for me.

[BonzaiCelica]

The best fuel here in CA is 95 ron. California used to be equipped with 98 ron fuel like every other state in the USA until 1991. 3SGE Beams Redtop Motor that requires < 98 ron and for it too run at 100%. Some are say, use 95 ron and ECU will retard timing.Running 95 ron on beams motor feels a bit sluggish.

Racing Fuel cost $9-10 a gallon here in Southern California with 76 gas stations carrying it. Here is List of Gas Stations in California (not updated)



calculator found here http://www.serioussolutions.com/evo/octcalc.htm

Calculations as follow : 9 gallons of 91 octane ($3.25 per gal) + 5 gallons of 100 octane ($9.99 per gal) = 14 gal mixture of 94 octane (overall total = $79.20)

For those of you who go to the track or raising boost levels. The engine has never seemed to knock with 91 octane, but im sure timing is being pulled. A dyno graph with current mods with 91 octane and a 94 octane mixture would be best to see if it actually help...

Now I know that most if not all gas station in California contain up to 6% ethanol blend in the 95 ron fuel for emissions. I just read on ethanol.org that all vehicles are "ethanol-capable" and can use a blend of up to 10% ethanol. Since the 1980s all automakers have covered up to 10% ethanol-blended fuel by warranty, no engine modifications necessary. It is by law, supposed to label how much ethanol blend is in the gas all California use at the pump, which is something i'll check out when I leave the house in a bit

Now mixing E85 ethanol with 95 ron fuel is what I'm after. E85 contains 85% ethanol and 15% fuel which is mainly used on flex fuel vehicles and cars that have been modified to run e85. By modified I mean new fuel lines and what not so that it does eat away at the rubber. E85 is cheaper than 108 ron racing fuel. In fact its about 50 cents cheaper per gallon than 95 ron. E85 is rated at 110-115 ron depending on the mixture. Tell me what you guys think. I also read something on it decreasing fuel mileage by about 10%. Now when I do or if it's safe to do so, mixing 4 gallons in a full tank of gas to achieve my goal of 100 ron mixture shouldn't really affect fuel mileage right?

thoughts on mixing e85 with 91 octane???

This post has been edited by BonzaiCelica: Mar 14, 2019 - 7:59 PM

[richee3]

It'll drop gas mileage by more than 10%, I can tell you that right now. We have a 2010 Silverado that is averaging 17.1 mpg on regular and 10-12 on E85. If it only lost 10%, it would still do better than 15 mpg. Illinois law requires a 10% blend of ethanol, and I get a steady 23 mpg in my IS 300. However, when I fill up in Indiana or Kentucky, I can easily get 25. Needless to say I'm not a big fan of ethanol. But I'm very curious to see if mixing E85 and regular fuel gets you the results you want since I'll have a BEAMS soon.

[BonzaiCelica]

It'll drop gas mileage by more than 10%, I can tell you that right now. We have a 2010 Silverado that is averaging 17.1 mpg on regular and 10-12 on E85. If it only lost 10%, it would still do better than 15 mpg. Illinois law requires a 10% blend of ethanol, and I get a steady 23 mpg in my IS 300. However, when I fill up in Indiana or Kentucky, I can easily get 25. Needless to say I'm not a big fan of ethanol. But I'm very curious to see if mixing E85 and regular fuel gets you the results you want since I'll have a BEAMS soon.

did you actually read my whole post??? ya but your silverado is running 10-12 gallons of e85 right?? I only plan on mixing 3-4 gallons max of e85 and the rest with 10 gal of 91 octane. You'll be fine with the 93 octane over in your beams motor. I"ve read that some octane are better than others. 94-95 octane is equal to 100 ron depending on the gas station. I just visited a 76 station and it said this gas contains up to 10% ethanal. Then I went to a Chevron I saw that nothing as listed on the pump, so I guess that chevron didn't??

[richee3]

Yeah, I read the whole post. I was just stating that ethanol will decrease gas mileage. But we don't have BEAMS so we can get 100,000 miles to the gallon now, do we?

[BonzaiCelica]

bump for the race fuel.... can e85 mixture will mess up the fuel system??

This post has been edited by BonzaiCelica: Mar 14, 2019 - 8:01 PM

[CelicaRacer97]

in CA what ever is cheaper. Gas is now $4.00 here