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View Full Version : What gas is recommended?



Jiggaboojeff
07-28-2010, 12:37 AM
Shell, 76, or Chevron? Thanks

PatrickJamesYu
07-28-2010, 01:05 AM
I personally use Chevron

codyep3
07-28-2010, 01:20 AM
ibtl

sup_mario
07-28-2010, 05:31 AM
I use Shell.http://imagecabin.info/images/index.php/fa65d32.gif

Onasty
07-28-2010, 07:31 AM
Gulf 93 premium all day everyday

talonXracer
07-28-2010, 07:37 AM
Any top tier fuel WITHOUT any alchohol added.

And there is absolutely no need for anything but 87 octane for the basically stock internal A3 engine.


Also, the 93 octane we have here in the states has equivalent or better power than the Euro 99octane. There isnt any difference in the fuel, just the way it is tested and rated, we use ron + mon divided by 2, the euro trash use the ron rating only.

The mon spec calls for additional refining to increase octane, while ron spec calls for additives to increase octane(with the resulting detonation). So a fuel with a higher mon rating will be a much higher quality of fuel even though the ron fuel may have a higher ron octane rating.

lbk02si
07-28-2010, 07:40 AM
Any top tier fuel WITHOUT any alchohol added.

And there is asolutely no need for anything but 87 octane for the basically stock internal A3 engine.

couldn't agree more!

JaydmEp3
07-28-2010, 09:07 PM
i use 76. my car drinks up shell gas hella quick.

RHCP0801
07-28-2010, 09:08 PM
i use whatever im closest too, usually bp since its on the way home from work and 93 because aftermarket internals

Ronnie
07-28-2010, 09:09 PM
Exxon , all the everyday
Premium for sure ;)

Andieldiablo
07-28-2010, 09:40 PM
i use chevron...and i like my gas how i like my women premium all the way

kprocivic
07-28-2010, 09:48 PM
now the ep is hondata less 87 all day usually valero. in the boobaru im supposed to use 91 but sometimes i use 89 usually arco. once i forgot and filled with 87 car ran like a 2 stroke running on straight gas.

Sucka
07-28-2010, 10:04 PM
i use shells V-Power 91 oct.

Mighty_Mouse_Ep
07-29-2010, 09:38 PM
I use any gas station near me before reflash i would use 87 after reflash i have been using 91. Sucks after the reflash the car seems to eat up more gas. Een before the reflash when i would use 91 just because the car used 91 octane faster then it used 87

Passenger
07-29-2010, 10:07 PM
just whatever, premium

DRP967
07-30-2010, 10:27 AM
Shell/Chevron/76

Whatever is near by and i use 87 octane.

From the three above i do favor Shell.

schumacher916
07-30-2010, 12:12 PM
I like Mobil 1 but every now and then I'll use Shell...89 works for me!

skep18
07-30-2010, 12:17 PM
Lol @ people who ingore Talon and waste money on premium in an econobox.

(forgive me to all of you that run boosted and/or kpro)

Passenger
07-30-2010, 04:24 PM
Lol @ people who ingore Talon and waste money on premium in an econobox.

(forgive me to all of you that run boosted and/or kpro)
Forgiven.

Johnny
08-17-2010, 12:10 AM
I tend to agree as with people changing their oil every 3k. Waist of money.

mangvue05si
08-17-2010, 02:23 PM
well I change my oil every 1K, but back to the topic, 91-93

PatrickJamesYu
08-18-2010, 02:32 PM
Well i painted my valve cover crinkle red, so I use 91 octane

2K3 EP3
08-22-2010, 01:34 AM
76 gas station. official race fuel. holla!

DRP967
08-22-2010, 08:20 AM
Well i painted my valve cover crinkle red, so I use 91 octane

Thats a legit reason to run 91.

Mighty_Mouse_Ep
08-22-2010, 09:53 AM
I tend to agree as with people changing their oil every 3k. Waist of money.
I agree as well i change my oil every 5k. Also using anything higher then 87 octane on an ep with out kpro/reflash or boost is a waste of money.

2K3 EP3
08-22-2010, 10:20 AM
waste of money. well , it ain't urs!

jh604
08-22-2010, 10:41 AM
boost 87!!!!!!!!!!!!!!!!!!!!!!!!!!! jkinggg gone cheap with boosted chevron/shell 91

trippy
08-22-2010, 10:52 AM
91 76 !

J Mo
08-22-2010, 04:24 PM
ive been using 91 on my completely stock a3, because im under the impression that the extra cents translated to 1-2 more mpg over 87 octane, which i was using from the beginning

now im actually in the process of reverting back to 87 octane and see if my mileage would be the same -- in which case i'll conclude that it was because i was still learning the car when i first got it

we'll see after a few more fillups, but i only fillup every other week :mbiggrin:

jed_averill
08-22-2010, 04:38 PM
I recently got 20mpg city. FML

mangvue05si
08-22-2010, 05:44 PM
i get around 280 for city, 360 for highway

RoyVegasPinoy
08-22-2010, 05:53 PM
I use Chevron. I like their gas station colors.

jed_averill
08-22-2010, 06:06 PM
I use Chevron. I like their gas station colors.

True but they are more expensive :(

PatrickJamesYu
08-22-2010, 06:49 PM
True but they are more expensive :(

But when you paint your valve cover red, Chevron is a must

jed_averill
08-22-2010, 06:50 PM
Then I'll get the Red and Yellow one :D

DRP967
08-22-2010, 09:26 PM
I agree as well i change my oil every 5k. Also using anything higher then 87 octane on an ep with out kpro/reflash or boost is a waste of money.

Thats what i love about the EP3, it doesnt need premium. 87 will suffice just fine cause of the low compression nature of the motor. Saves lots of mula at the pump. I change my oil every 5k as well with full synthetic Schaeffer brand oil. My EP3 has 145,560 miles on the motor and runs like a champ...i must be doing something right.

jed_averill
08-22-2010, 09:33 PM
It's Honda afterall. I'll keep using 87s but I'm still getting shitty MPG (last tank was 20mpg city FML). I've been doing research and I think I should be reving around 3k to 4k RPM before switching gears.

DRP967
08-22-2010, 10:16 PM
It's Honda afterall. I'll keep using 87s but I'm still getting shitty MPG (last tank was 20mpg city FML). I've been doing research and I think I should be reving around 3k to 4k RPM before switching gears.

I think Honda's have great motors...not so great transmissions.
3rd gear pop out and 2nd/3rd gear crunch are not uncommon for EP3s/DC5s.

*I shift around 3k...i get hella good gas mileage.

jed_averill
08-23-2010, 09:09 AM
How much do you press on the pedal?

Mighty_Mouse_Ep
08-23-2010, 11:13 AM
I heard shifting at 3.5-4.5k is ideal for best gas milage. Also check your tire pressure if they are to low your gas milage will go down.

PatrickJamesYu
08-23-2010, 12:13 PM
How much do you press on the pedal?

steadily
No fast accels
This is roughly my economical shifting
1st
2nd 3k
3rd 3k
4th 3.5k
5th 4k

jed_averill
08-23-2010, 12:17 PM
steadily
No fast accels
This is roughly my economical shifting
1st
2nd 3k
3rd 3k
4th 3.5k
5th 4k

MPG? You're on 91 octane right? Do you have experience with 87 octane and what MPG it gives?

DRP967
08-23-2010, 02:53 PM
I heard shifting at 3.5-4.5k is ideal for best gas milage. Also check your tire pressure if they are to low your gas milage will go down.

its amazing how much smoother/faster the car runs when the tire's are properly inflated. My PSI was low, aired those rubbers up and i was rolling forever like i was in a frictionless environment.

PatrickJamesYu
08-24-2010, 12:38 AM
the whole having a red valve cover thing, I was just messing around
haha please, nobody think i use 91 just cause of a painted valve cover

I run Chevron's 87 with techron.

In all honesty I first ran with nothing but 91 octane.
But after about 10 fill up's I learned It had no benefit to me or my car

I'm not sure how much MPG I'm getting, I'll have to figure it out..
once I figure out how you guys figure it out..

I feel like my MPG's suck, but I do put alot of miles on my car every week

listen to the others about the tire pressure.
Keep 'em filled, it will make a hugee difference.
also very noticable in the "feel" of the car as well.

jed_averill
08-24-2010, 01:19 AM
Yah pressure should be something checked everyday IMO. Just have a gauge handy in your car. Another thing I do with my car once in a while is tighten my lug nuts lol there's always one or two that got more loose.

I've been driving diligently my last full tank except for that one time I had my friend try out my car (2 days ago). I'm hoping to get at least 27 MPG again.

PatrickJamesYu
08-24-2010, 01:36 AM
Yah pressure should be something checked everyday IMO. Just have a gauge handy in your car. Another thing I do with my car once in a while is tighten my lug nuts lol there's always one or two that got more loose.

I've been driving diligently my last full tank except for that one time I had my friend try out my car (2 days ago). I'm hoping to get at least 27 MPG again.

Your lugs, do you torque them?
They're probably coming loose because they are unevenly tightened.
Tighten them across not in a circle. This idea makes sense if you sit there and think and/or if you've tuned a drum set before or something.
And you want to torque them
80 pound's per lug
Over tightening and under tightening can cause lug failure
Torqueing them all to the factory 80 lbs should fix you're problem.

jed_averill
08-26-2010, 03:42 PM
Its not that loose, it's more like just checking if they are even uneven. Haven't noticed any differences. I don't have those torque tools. I'll get it done at the shop during my oil change.

BTW on another topic. I was driving 60-65 mph on the free way for about 166 miles with 4-5 almost red line overtaking cars and the result is 31.XX MPG. Bad, good or average?

LOVIN MY EP3
08-27-2010, 03:31 PM
I mix it Shell V-power and Chevron with Techron so I end up with more V-TECH !!!

PatrickJamesYu
08-27-2010, 10:29 PM
I mix it Shell V-power and Chevron with Techron so I end up with more V-TECH !!!

hahahahahahahaaagh

J Mo
09-05-2010, 03:34 PM
ive been using 91 on my completely stock a3, because im under the impression that the extra cents translated to 1-2 more mpg over 87 octane, which i was using from the beginning

now im actually in the process of reverting back to 87 octane and see if my mileage would be the same -- in which case i'll conclude that it was because i was still learning the car when i first got it

we'll see after a few more fillups, but i only fillup every other week :mbiggrin:

UPDATE: alright, i made the transition back to using 87 octane gas, and seems like im getting the same mileage and performance out of 87 octane versus 91 octane on the last tank, with redline sprints here and there -- by the way ive been previously getting values (and seems like i still will be) between 23-25 mpg with shifting at 4k, and cruising at 2.2k rpm or above, just to keep i-VTEC engaged (i read from this forum thread (http://ecomodder.com/forum/showthread.php/ep3-k20a3-drivers-give-me-tips-please-3673.html) that better MPG is read from a scangauge when i-VTEC is engaged)

of course this is only one tank of 87, i'll probably chime back in when i get more tanks emptied


ONE FINAL EDIT: its conclusive -- 91 does not provide significant gains over 87 in a stock k20a3 motor -- mpg stayed the same, redlining still feels the same, etc etc etc

TheKone
10-06-2010, 09:49 PM
The Honda manual actually states that the engine was designed to use fuel with an octane rating of 86 or higher. The use of 91 octane or higher on a stock K20A3 is a complete waste of money. Higher octane fuel actually burns at a slower rate than lower octane due to its higher resistance to detonation. The use of higher octane fuel (especially 93-94 octane) can reduce horsepower and fuel mileage due to the lower volatility of the fuel. All fuel regardless of octane rating contains the same amount of energy per unit volume so using a fuel that burns slower results in lower performance and mileage if the engine is not tuned to make use of the higher octane. If you tune your engine with advanced ignition timing, higher compression internals or boost then of course the higher octane is required. I hope this helps clear up some myths and saves you some money. I can provide links to information about this if you would like.

PS: As far as the argument about when to shift, the Honda manual also gives recommendations for this.
Normal Acceleration
1st to 2nd - 14mph (23km/h)
2nd to 3rd - 25mph (40km/h)
3rd to 4th - 40mph (64km/h)
4th to 5th - 49mph (79km/h)

Cruise from acceleration
1st to 2nd - 7mph (11km/h)
2nd to 3rd - 23mph (37km/h)
3rd to 4th - 33mph (53km/h)
4th to 5th - 45mph (72km/h)

Give these a shot for a couple of fill-ups and see if your mileage improves.

Thanks for reading

Rasy
10-17-2010, 04:14 PM
The Honda manual actually states that the engine was designed to use fuel with an octane rating of 86 or higher. The use of 91 octane or higher on a stock K20A3 is a complete waste of money. Higher octane fuel actually burns at a slower rate than lower octane due to its higher resistance to detonation. The use of higher octane fuel (especially 93-94 octane) can reduce horsepower and fuel mileage due to the lower volatility of the fuel. All fuel regardless of octane rating contains the same amount of energy per unit volume so using a fuel that burns slower results in lower performance and mileage if the engine is not tuned to make use of the higher octane. If you tune your engine with advanced ignition timing, higher compression internals or boost then of course the higher octane is required. I hope this helps clear up some myths and saves you some money. I can provide links to information about this if you would like.

PS: As far as the argument about when to shift, the Honda manual also gives recommendations for this.
Normal Acceleration
1st to 2nd - 14mph (23km/h)
2nd to 3rd - 25mph (40km/h)
3rd to 4th - 40mph (64km/h)
4th to 5th - 49mph (79km/h)

Cruise from acceleration
1st to 2nd - 7mph (11km/h)
2nd to 3rd - 23mph (37km/h)
3rd to 4th - 33mph (53km/h)
4th to 5th - 45mph (72km/h)

Give these a shot for a couple of fill-ups and see if your mileage improves.

Thanks for reading

Nice to see that someone with 3 posts is the first one to write their recommendations based on the service manual.

I get 87, always have been, and log onto Fuelly (http://www.fuelly.com) to log my MPG.

ep3demon
10-17-2010, 10:36 PM
octane has nothing to do with mpg

just resistance to detonation

87 all the way on a otherwise stock car dont kid yourselves you wont get anything else out of paying more for premium gas on a stock car

your drving style will much more affect your mpg than anything else.

Mighty_Mouse
10-30-2010, 04:39 PM
octane has nothing to do with mpg

just resistance to detonation

87 all the way on a otherwise stock car dont kid yourselves you wont get anything else out of paying more for premium gas on a stock car

your drving style will much more affect your mpg than anything else.

Terrible information from a noob. Octane DOES relate to MPG. The higher the octane rating, the lower the potential heat and MPG. Not a huge difference between 87 and 93, but there IS a difference. Anyone who tells you otherwise is an idiot.

Twisted-X
10-31-2010, 09:17 AM
I've been using Shell 93 since I got Kpro. I have to say, with 93 and a decent tune the stock A3 really wakes up.

Silvercard
10-31-2010, 10:49 AM
I shift at 3k. With 87 my engine has a louder ticking sound and seems sluggish. Drop 91 and very less ticking sound and a difference in power.