Figured I'd build off the other thread for something potentially interesting/useful.

Post where you're cars model and mileage, where you're buying gas and octane rating, and you're average MPG.

(I'll post mine at next fill up)

 

06 Civic EX Coupe. 5spd. Avg. 30-35mpg. I use 87 octane. Chevron is the only gas my tank has ever seen.

 

WE should also include was it city or highway driving.

WEll here is my infoo

07 Civic lx 4 dr. Atomatic

i dotn know what fuel they filled me up with in HONDA, soes any one knoe this? is there a special brand or just the closest gas station?

well either way i got about 24 MPG all city with alot of warming up before heading out.

Afterwards i used shell 87. USE 87 using anythign higher will not benefit you and your car will not run any better you will just have depesits from the unburned fuel. well i got 26.6 mpg with fewr warms ups this time and again Just City driving. Stop and go stop and gooo ehhh i hate it here.

 

07 SI Shell V-power 26-28mpg. Good mix of highway/city. Heavy on the gas peddle.

 

I have topped off my tank twice since I picked up my 2007 LX on 5/4. The gas tank was only half empty each time. Both times I have used Chevron 93 octane. My mpg has only averaged ~22 so far, but the car only has ~335 miles on it. My driving is mostly between 30-45 mph around town in Houston. This should be an interesting thread!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mfisher1967 &raquo;</TD></TR><TR><TD CLASS="quote">I have topped off my tank twice since I picked up my 2007 LX on 5/4. The gas tank was only half empty each time. Both times I have used Chevron 93 octane. My mpg has only averaged ~22 so far, but the car only has ~335 miles on it. My driving is mostly between 30-45 mph around town in Houston. This should be an interesting thread!</TD></TR></TABLE>

USE 87 using anythign higher will not benefit you and your car will not run any better you will just have depesits from the unburned fuel. well i got 26.6 mpg with fewr warms ups this time and again Just City driving. Stop and go stop and gooo ehhh i hate it here.
hah thats y ur getting such low mpg

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mfisher1967 &raquo;</TD></TR><TR><TD CLASS="quote">I have topped off my tank twice since I picked up my 2007 LX on 5/4. The gas tank was only half empty each time. Both times I have used Chevron 93 octane. My mpg has only averaged ~22 so far, but the car only has ~335 miles on it. My driving is mostly between 30-45 mph around town in Houston. This should be an interesting thread!</TD></TR></TABLE>

Ouch.. Lay off the pedal? As said above, you're wasting money with premium. The R18 isn't going to gain anything off of higher octane..

 

I know that my car will not see increased mpg from using 93 octane. You have to remember that I work in an oil refinery and I talk to Chemical Engineers and Chemists on a daily basis. There are components put into 87 octane gasoline that are not permissible in 89, 92 or 93 octane. Trust me, there is a difference. A Chemist that I respect greatly, and who was once the Superintendent of the Lab at my refinery, told me that he uses 89 octane because of the "trash" hydrocarbon components that make their way into 87 octane gasoline during the blending process. The higher the octane, the slower the burn. This is due to an increase in the molecular complexity (hydrocarbon chain length) of higher octane gasoline. The feedstock for gasoline is Naphtha. Gasoline is manufactured at our Fluid Catalytic Cracking Unit (FCCU) and Reformer. If I recall correctly, our Reformer produces 106 octane gasoline, which is then blended down using lower octane material. I may be remembering this incorrectly, but 87 octane gasoline is manufactured using lower octane material and octane boosting components. I will get information on how this is done an update this post tomorrow. Bottom line, people that I know and respect at the refinery where I work advise me to use at least 89 octane if I want to extend the life and cleanliness of my engine.

 

One other point of interest concerning gasoline. Just because you purchase gasoline at a branded gasoline station, Brand X if you will, it does not mean that the gasoline you have purchased was refined at an oil refinery owned by Brand X. Gasoline is often put into a common, or shared, pipeline. Each company using the pipeline must certify that gasoline they put into the pipeline meets certain criteria, but in the end several companies may load tanker trucks at the distribution terminal. Proprietary additive packages (AKA detergent additives) are added at the distribution terminal as gasoline is loaded into the tanker trucks for delivery. Please keep in mind that this is not always the case, but I have seen gasoline made by our company being loaded and delivered to gas stations owned by another company. I feel that Chevron makes the best additive package, but that is just my opinion.

 

since 89 octane is blended AT THE PUMP from 87 and 91, your friends at the refinery are jerking your chain.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by anavrin351 &raquo;</TD></TR><TR><TD CLASS="quote">07 SI Shell V-power 26-28mpg. Good mix of highway/city. Heavy on the gas peddle.</TD></TR></TABLE>
Dito but I think I am heavier on the pedal cause I usually get about 21-23.

 

SHELL V-POWER ALL THE WAY....


check out this web site..pretty good stuff


http://www.Gasbuddy.com

 

89 octane blended at the pump??? With respect, I worked at a gas station while going to college. One of my duties at the station was to check the underground tanks for all three grades of gasoline (87, 89 and 92 octane) and diesel for H2O. I digress, but this was done using long wooden strapping rods and H2O sensitive paste.

My point being that any blending from my experience is done before gasoline reaches the gas station. Some things to ponder: Who, or what, would control blending of gasoline if it was done at the service station? There is no lab or QA, other than periodic checks for H2O, performed at the gas station. How would one know if the ratio of 87 and 91 octane gasoline was correct when purchasing 89 octane given this information?

Perhaps you have information that can shed some light on these things?

 

So, my 07 SI Sedan is getting 25mpg 98% city on 93 octane Costco Gas. Only 800 miles on the car though.

 

2006 SI

MPG = 22 to 24 mpg

Fuel = 70% Chevron Supreme 91 Octane, 30% Union 76 Racing Fuel 100 Octane. Net is around 93 Octane.