What Octane Do You Prefer?

[firefighterwhite89]

Just curious.

[A18A]

I always used 95 RON in my b20a accord, or 98 RON when it's available and someone else pays for it. dunno what that is in MON though

apparently our 91 is equal to your guys 82 lol

[charliekuney]

I just use 87 from SafeWay because after my 10¢/gal discount it's the cheapest out of all of the gas stations.

[1813mdw]

i put $4 dollars a day of 87octane in my car every morn on the way to work lol.

[Pico]

With the price of gas here in Calif. 87 is all I ever get..and where ever it's cheap

[forrest89sei]

87 From Either Arco or Shell

[cubert]

87 octane in the car, and either 93 or 110 in the bike

[lostforawhile]

the way the octane standard is measured has changed since these cars were built, what was 87 in 1986 today would measure closer to 89, most new cars adjust to the different standard with no issue, but the older cars are kind of hung out to dry, the corn they put in the gas doesn't help either, I think stabil has formulated an additive to help offset the creamed corn in the tank, but i'm not sure of anything that really helps the octane issue

[forrest89sei]

^ Yeah true, In California up to Gas can contain up to 10% Ethanol

[firefighterwhite89]

I use 93 Octane, as it helps reduce ping even more than 87, especially since i've blocked off my EGR valve AND, my Workshop manual, says use 91 RON or higher...Besides the fact Idle and acceleration seem slightly smoother and i get noticably better gas mileage using 93 vs 87. It's only 18 cents more here. Help keep your engine slightly cleaner internally, though carbon build-up is inevitable.
AND, my exhaust is actually 150*-200*F cooler running 93 vs. 87 i noticed on my EGT gauge.

[firefighterwhite89]

^ Yeah true, In California up to Gas can contain up to 10% Ethanol

Luckily, at least 40% of gas sold in AL is ethanol free FTMFW. Screw some ethanol. I'd MUCH rather run Gas/Methanol! lol.

[forrest89sei]

Luckily, at least 40% of gas sold in AL is ethanol free FTMFW. Screw some ethanol. I'd MUCH rather run Gas/Methanol! lol.

BUT it's done us sooo well!

I mean we're using a Food Source in our cars! So Corn Prices are sky high, but Gas Prices are um......... Yeah. Still High! GO CORN!

[mykwikcoupe]

I want to saw all gas in WA state is up to 10% ethanol as well. i try to run 87 most of the time and every rd tank I run premium. I think its ok since i put 700-1000 miles a week in the car. The gas itself really doesnt last very long. Issue is twice a week i climb a 3300ft pass at 90 miles an hour. The car doesnt seem to mind either way.

[DBMaster]

Having had the car since it was new I am actually happy to say that I can run on 87 octane. Until the gas here was reformulated with ethanol I had to use mid-grade to prevent pinging. I have no pings or knocks on the current 87 while I did have them for years prior if I tried to use it.

The drawback, of course, is that I lost three mpg of fuel economy and the engine does not perform quite as well. These are well documented issues.

[Xybris]

I've always used 87 and never had any problems. Over where I am now they only give us 93 (or 91, I can't remember)- I don't know why, maybe for the Nissan ricerfags. Since the earthquake wrecked the refinery it's down to 87 and I can't tell a difference, not like I ever would with a D16 stock.

[Dr_Snooz]

I used to use premium 92, then it changed to 91, so I use that now. I want the engine to stay nice and clean inside and the reduced pinging is good insurance for an engine that doesn't have knock sensors. With gas at this price, what's a few more pennies per gallon?

[gp02a0083]

I used to use premium 92, then it changed to 91, so I use that now. I want the engine to stay nice and clean inside and the reduced pinging is good insurance for an engine that doesn't have knock sensors. With gas at this price, what's a few more pennies per gallon?

exactly, i use 92/93 preferably at wawa or sunoco gas stations. I have found out with my hatch , im getting at least 33 miles on average more with the higher octane fuel. I filled up yesterday even with premium at $4.03 a gallon vs $3.83 for regular, it was about a $2.40 difference for a fill up.

as far as the concern and performance with the E10 blend that's now practically a standard. When our cars were built they used MTBE in the gas, prior to the ethanol blending. They had to phase out MTBE due to its toxicity characteristics. I could go into a lot more , but im not gonna bore you guys to death with scientific junk.

[Oldblueaccord]

I run 2 gallons on E-85 to a tank of 87 octane (E-10) I just pulled a 30.3 and a 30.8mpg. It comes out very close to 30% on a fill up every 300 miles. its 30 miles to work one way and I have 9 stop lights and a 15 mile highway run.



wp

[MessyHonda]

any shell

[Vanilla Sky]

It's best to run the fuel that keeps your engine from pinging or gives the best performance. Higher octane does nothing at all to keep your engine cleaner. Run the lowest grade your car will allow.

[gfrg88]

I'm gonna be pumping 104

[ecogabriel]

I pump 87 and the car works fine - no pinging.

Based on what I have read here though, I am wondering if 89 octane would make a difference in mileage. Maybe an "experiment" I will run soon.

[lostforawhile]

I pump 87 and the car works fine - no pinging.

Based on what I have read here though, I am wondering if 89 octane would make a difference in mileage. Maybe an "experiment" I will run soon.

it may depend on the area you are in, the formulation changes regionally

[ShyBoyCA6]

i just pump 87 with some fuel treatment every 3000 miles or oil change.

[2oodoor]

I run 2 gallons on E-85 to a tank of 87 octane (E-10) I just pulled a 30.3 and a 30.8mpg. It comes out very close to 30% on a fill up every 300 miles. its 30 miles to work one way and I have 9 stop lights and a 15 mile highway run.



wp

wow, your commute sounds just like mine!
I have heard a lot of opininos and data supported debates on this topic. It seems to vary a LOT between models.
As for latley I use 87 in everything but I did put in 93 in the B20 LX last month and that gas seemed to last a lot longer. That could have been my driving style changed to see how many mpg I could squeeze in general. The 87 I filled up with in the same car last week seems to be going down faster but I won't know pure data till next week.
Big news today is the E15 we're about to get, well believe we already have been getting it wiith out being told.
Will we all have to be using owner poured additives to hold this stuff back from separating and corroding our fuel systems? Could be a rise in sales of that stuff, stockholders.