io_burn

So this morning I stopped to get gas at some shitty gas station where the pump is all mixed up with the normal gas in the middle instead of on the left side, like EVERY OTHER DAMN GAS STATION ON THE PLANET... Anyway, in a tired stupor I put about 2 and a half gallons of 89 octane 'Plus' gas in my car, reset my tripometer, and noticed what I was doing and let out a big string of curses. I then filled the rest of the tank up with 93 octane 'Premium' gas. Will mixing octanes like this cause any damage to my car? I don't notice it running or driving any differently... Just a very stupid mistake on my part.

BlueR

iTrader: (10)

you will be fine, the other 8 gallaons of 93 octance will raise the level sufficiently

drive on...no worries

importfreak02

Ya you shouldn't have any problems.

Nameless RB26

hahahaha don't even worry about it.

nsxtcjr

Don't worry about it.

Even if you filled the entire tank with 89 octane, it shouldn't hurt anything; the engine computer should detect the lower octane and retard the timing to adjust for it. Your performance would suffer, but it wouldn't hurt anything. Performance would be back to normal on subsequent tanks.

Like others have said, since this is less than 20 percent of your tank in your case, it shouldn't make a whole lot of difference.

io_burn

Hahaha, alright

GRM Scott

Run, as fast as you can, your car is now a time bomb ticking the seconds of your life away!!!

You're totally fine. Even if you filled it to the brim with 89, the knock sensor would detect problems, and might make it run stupid, but it'd basically be OK unless you stayed at WOT & 8500. You're probably still above the 91 octate minimum recomended limit with the mix you've got in there, remember 89 is the M/RON minimum octane of the fuel.

TsunamiZC

it'll be fine ...now if you put in diesel ..thats a different story

type r 01-1063

That surely would be a totally different story but it would be impossible. Diesel gas pump nozzles are designed bigger to not fit regular gas tank.
Diesel gas pumps = Idiot proof

GokuSSJ4

at least you get 93 octane , we only have 91

Malice

if there is one thing i have learned in this lifetime is to never underestimate the power of stupidity


as far as 89 octane in the R.....tick,tick,tick,tick,tick,tick,tick,tick,tick ,tick,tick,tick,tick,tick,tick,..... after a while it'll go away

io_burn

I did notice just a little ticking, what's the best thing to do at this point, just drive the car until my gas is so low i'm running on fumes and then fill it up, or keep diluting it with premium?

Chris N

Just put more 93 in after you have used up a few gallons, try to dilute it as much as possible.

Nameless RB26

Go get some octane booster if you're worried..

(please don't start debating that it doesn't work)

baonest1

i dont know bout everyone elses answer.. but i believe u shouldnt worry about it.

itr1244

just chill man. relax.

i've mixed octance alot. and nothing has happen to my R yet.

but it's only between 93 or 94. hehe

George H

I wouldnt worry about it. The computer should automatically retard timing.......should it not?

Eiter way, as stated before, the octane will be raised because you added the 93. The important thing is to not let it happen again .

Mr Boston

No need to worry

TypeR 01 886

I have done the same thing to my R, I put a full tank of normal before. I was freaked out too.... I bought octane booster and fuel injector cleaner. I never felt the car run any different.

I know there is nothing to worry about becuase I have done it. Just makes you think lowly of your self becuase you cant belive you let that happen to you baby. She will forgive you when you giver her a nice wash!

JDMPARTS4U

buy 3 gallons of 100 76 racing fuel and you should be ok ahahahah j/k your fine my buddie used to put 87 in his GSR when he was pretty borke he just didnt hit vtec and you should be ok till you flush it out by driving it

uber_nihilist

*pssssst* Remember that shiny little silver book that comes with the car!? Yeah the one called the "Owners manual" or something like that. Seek and ye shall find, search for fueling the integra and your questions will be answered.

SoCal ITR

Edit: I've put in an entire tank of 90 before, and didn't feel a thing, so again, I'm sure you're fine.


[Modified by SoCal ITR, 4:18 AM 12/27/2002]

WundedSaint

You'll just produce less hp

Blue Liquid

There was an article where they put 87 opctane in a GSR, and it produced less horsepower, I guess the car's computer cuts back. Then, it took multiple tanks of 91 octane to bring the HP rating back up to normal. Two days ago the monkey at the Sunoco station put 6 gallons of 87 octane into my car, right after I asked for 93 octane. It's my fault for not watching him like a small child so he doesnt mess up my difficult request. So for now, it seems to run the same as it did before, there's no way the butt dyno can detect any loss of Hp so far. I'm going to run it down to vapors and then fill up with 94 octane at the pump, probly for two tanks worth, then go back to my regular 93 octane. Never again will I trust the non-high school graduate criminal who is pumping my gas at shitty New Jersey gas stations.


[Modified by Yellow R #01-0468, 8:19 AM 12/27/2002]

cialz

friend has stupid frat bro put gas in a diesel truck.... that he borrowed too... ahahh sucks to be him