2005 Civic LX Couple Fuel / Gas Octane Reccommendation?
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I know this seems like a stupid question but it's having me very confused.
When I first bought my car I thought it was supposed to use regular 87 octane, then I read somewhere that it's recommended to use midgrade 89.
But I just now checked the manual and it says to use "86 octane or higher".
So I'm very confused if I should be using regular or midgrade (or maybe even higher)?
I'm looking for the highest performance, not 'whatever will run for the cheapest' or 'minimum requirement' I want to use what will run best for the car.
I haven't found anywhere in the manual that says to use a specific octane, and only that octane.
If anyone else has the same car and knows the answer let me know.
- Paul
When I first bought my car I thought it was supposed to use regular 87 octane, then I read somewhere that it's recommended to use midgrade 89.
But I just now checked the manual and it says to use "86 octane or higher".
So I'm very confused if I should be using regular or midgrade (or maybe even higher)?
I'm looking for the highest performance, not 'whatever will run for the cheapest' or 'minimum requirement' I want to use what will run best for the car.
I haven't found anywhere in the manual that says to use a specific octane, and only that octane.
If anyone else has the same car and knows the answer let me know.
- Paul
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Rep Power: 0 Re: 2005 Civic LX Couple Fuel / Gas Octane Reccommendation?
Actually I just swapped over to 87 and I noticed the tranny shifting smoother and the car getting up speed smoother. Before I had to stomp on the gas a little more and it seemed almost 'airy' when I was trying to accelerate.
Overall it's faster and soo much more smooth than when I've been using 89 (which has been for the past 8+ months).
Use 87 dude.
Overall it's faster and soo much more smooth than when I've been using 89 (which has been for the past 8+ months).
Use 87 dude.
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Rep Power: 232 Re: 2005 Civic LX Couple Fuel / Gas Octane Reccommendation?
our engine was specifically designed for low octane gas 86-87 anything higher for a stock D17 engine is a waste of money and you will actually lose performance. it has to do with the way the mixture ignites in the engine.
Last edited by lowlife9; 03-06-2010 at 10:32 PM.
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oh yea..just floored my car around a slow dump truck today and it felt great.
87 octane FTW. Cheaper and my car is significantly faster with it.
I can't believe I was dumb enough to use 89 for so long!
87 octane FTW. Cheaper and my car is significantly faster with it.
I can't believe I was dumb enough to use 89 for so long!
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Rep Power: 232 Re: 2005 Civic LX Couple Fuel / Gas Octane Reccommendation?
you could also reset the computer to do a idle relearn with the 87 octane so your car will learn faster on the lower octane.
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