What kinda Gas does everyone use?
1 - 20 of 195 Posts
I'll start, I use 91-93 Octane, and Texaco (now known as Shell) and 76 seem to be the better grade of gas over here in Wenatchee, Washington. But I am thinking of going down to the 89 Octane, just to see if I can notice a difference and save a couple bucks.
i use to put 91 in my car all the time, however since gas has gone up I decided to give 89 a try. So far the car seems to be running a little better on 89. hopefully the I'll get more miles out of a tank now. I'll let you guys now what happens.
87 Octane, as liigod stated above, it's what the stock ECU requires. It is what the naturally aspirated engines are tuned for.
Adding higher octane fuel to a NA car does nothing. The higher octane fuels are for the higher performance engines. Engines that are turboed and super charged require the higher octane fuel as it burns slower. This is necessary due to the higher temperatures inside the engine due to boosting.
I fail to see any benefit from adding higher octane fuel.
And I'm not poor for putting in 87, I'm following directions.
Fuel Octane Ratings
What Octane Should I Use?
Howstuffworks article on "Octane"
Google Search on "Octane Rating"
AJ
Adding higher octane fuel to a NA car does nothing. The higher octane fuels are for the higher performance engines. Engines that are turboed and super charged require the higher octane fuel as it burns slower. This is necessary due to the higher temperatures inside the engine due to boosting.
I fail to see any benefit from adding higher octane fuel.
And I'm not poor for putting in 87, I'm following directions.
Fuel Octane Ratings
What Octane Should I Use?
Howstuffworks article on "Octane"
Google Search on "Octane Rating"
AJ
You beat me to it, but ya. The car runs worse with higher octane in my experience. I get crap from people sometimes, but I don't care as they really don't know what they are talking about. I use Shell for the most part. Chevron is better, but the cesspool of the midwest fails to get it.squared away said:
JC
87, prizes are damn high this days 
.
.And for brands, I try to stick to the following
Mobile
Amoco
Citgo
Texaco
I don't know why, it's just been a thing with my family to go to a few specific gas stations. Makes it easy.
And I've have an ongoing track of my MPG and other neat figures I can gather between fill-ups.
AJ
Mobile
Amoco
Citgo
Texaco
I don't know why, it's just been a thing with my family to go to a few specific gas stations. Makes it easy.
And I've have an ongoing track of my MPG and other neat figures I can gather between fill-ups.
AJ
On special occasions my car gets higher grade however the normal is 89 since yes prices are very high and the highest grade just doesn't seem worth it. The manual I believe doesn't even say for 89 so I'm already going a step up, I just don't see the purpose for that one more step. As far as brands usally Safeway gas since it normally the cheapest and I know for a fact it's just as good as most all the stations around here.
Yeah, exactly! Being poor has nothing to do with it.squared away said:
If my RS was supposed to run on 91, then that's what I would use. I don't care about the cost. My previous car was a 1997 Prelude w/ VTEC. The manual called for 91 octane so that's what I used. My RS is designed to run on 87 octane so that's what I use. I don't even look at the gas prices. I just swipe my gas card and fill the car with the proper octane fuel.
Unless your RS is turbocharged or supercharged or you are running agressive tuning like advanced timing or something, using anything higher than 87 octane is a waste of money.
I usually use 87, but sometimes I use the 91. I have the ProECM in my car, and it's supposed to be able to take advantage of higher octane by advancing the timing. Right now, I have a little spreadsheet on my PDA, and I'm keping track of MPG, cost/mile, and what octane has been used. I'm going to use 87 for the next several fill-ups, and see what happens. Then I'm going to use 91 for the next bunch (so the ECU has time to learn the difference between the two), and see if there's a difference, and whether or not the difference is big enough to make it economically feasible. I'll try to keep you all updated, if I can remember. Oh, and I pretty much only use Shell.
Waste of money....A waste of money is using 87 'cause you probably haven't taken the time and used the 91 for several tank fulls and you dont know the difference between your car running better and smoother with 91compared to it running crappy. If you havent used the 91 or even 89 for a couple of tanks (more then a week) and only use the 87, you wont know the difference. So spending an extra $0.20 on gas really does make a difference.rsowell28 said:
UNLESS: You have compared the Octanes and the 87 does make your car run better...but i doubt it.
You dont skimp and use cheap parts when it comes to other important parts of your car do you, then why skimp on gas?
I thought that if you were running the ProECM, that you had to use 91 octane or higher because it advances the timing. I don't have one though so I don't really know. Could somebody who has one please clue me in? :burnout:Sorry dude, Id didnt mean to confuse you. I dont know what you should use when running a ProECM, but I do know that using the higher octane does make your car run better. NOT saying this for everyone, but it looks like the majority say the prefer 89 or above.rsowell28 said:
I did try 91. I ran 91 for the first month that I had my RS. Then I realized that 87 would probably work better so I switched to that. On 87 my car runs the same as it does on 91 except it gets better mileage and 87 is cheaper. My car is n/a so I don't need a high octane fuel and the car is designed for 87. 91 will work fine but it's more expensive and the mileage suffers.CWC.02 said:
1 - 20 of 195 Posts
Join the discussion
Join now to ask and comment!