Mustang Evolution Forum banner

1 - 20 of 39 Posts

·
Registered
Joined
·
129 Posts
Discussion Starter #1
In a GT that's n/a

Runs better with the 93. But is it burning faster? Even sounds nicer.

Only put 93 the past few times.


What's your take on it?
 

·
Registered
Joined
·
1,714 Posts
That is the ONLY thing, I will put in my Engine 93. :headbang:
 

·
Registered
Joined
·
1,863 Posts
I always put 91 or better octane in mine because I was told with a supercharger it was what it had to have.
 

·
Registered
Joined
·
165 Posts
If it can run just fine on 87 higher octane won't do ANYTHING except cost more money!
 

·
Registered
Joined
·
3,257 Posts
94 Mustang GT said:
If it can run just fine on 87 higher octane won't do ANYTHING except cost more money!
I can run 87 through mine but it just burns it up too quick!.. Ultimately costing more in the long run!..
 

·
Registered
Joined
·
903 Posts
If it can run just fine on 87 higher octane won't do ANYTHING except cost more money!
thank you.. you beat me to it. Unless your car is tuned there is absolutely no difference. its like giving you a placebo pill its all mental. I know a lot of people who believe that higher octane gas is “better” for your car than lower octane gas, as if the words premium next to the higher ratings actually mean the gasoline is better for your car. It isn’t. If you believe it is, don’t be dismayed, you’ve simply become accustomed to reading the words “premium” next to the label and believing the great marketing machine that helped create over $10B in 4th quarter profits for companies like Exxon-Mobil. The octane rating of gasoline is a measure of how much you can compress the gasoline before it ignites, not how “good” it is.

Cars that require higher octane gas actually need that higher priced gas because the engines compress the fuel more before it ignites it. If you put regular gas in a car that requires premium, the gas will prematurely ignite when it’s being compressed and the engine will give you a knocking sound. This is bad for your car.

hope this helps everyone save some money.

think of it this way...

if you spend a dif of .30 for 13 gallons and you fill up once a week.

13 x .30 = 3.90 x 52 = 202.80

so with gas at 3.00 a gallon, if you get 13 gallons a week that adds up to being a total of

13 x 3 = 39 202.80 / 39 = 5.2

so roughly 5 fill ups can be paid for by simply not using premium gas meaning 1/10th of a year is wasted on useless gas.

keep in mind that 93 is a diff of .40 meaning you lose 6.9 weeks of fill ups just from the .10 difference.

and theoretically to Eturner, High octane fuel is designed for high performance, high compression engines. Some lower performance vehicles can benefit from an increase in octane, the increased detergency also helps keep the fuel and combustion systems cleaner. However most computer control vehicles will automatically compensate for variations in fuel quality and economy will not really increase. The only mileage realized may be the engine could run smoother and more responsive which could equate to better economy. Considering the cost to benefit , I would use the fuel grade specified by the manufacture. So you should not see an increase without a tune.
 

·
It's not me, it's you.
Joined
·
6,752 Posts
I believe 93 Octane is a better fuel then 87 Octane. My 1989 Nissan 240sx uses 93 Octane. It's 2.4 Sohc is completely stock and maintained with over 300,000 miles on it. A few years ago when 93 Octane was up to $4.50 a gallon I decided to start using 87 to try and save some money. I took good care of my car, I figured it should run fine on 87. About a quarter of the way through that tank of gas I noticed the idle had become rougher and before I got below half a tank, my 240sx would stall at every stop. That was not a placebo. Since most of my miles were highway I finished that tank and refueled with 93 Octane and it ran fine after that. But I have since to try using 87 Octane since they started blending 10% ethanol into it. Maybe it'll run better on it now? I don't know. All I know is 93 Octane makes a huge difference in my 4 banger.
 

·
Registered
Joined
·
3,257 Posts
My Mustang has a basic tune in it!.. So 93 it is!..

I used to have a '96 Monte-Carlo Z34!.. It had a 3.4L DOHC V6 with 215hp!.. Not a high performance engine by any standards!.. When I first got it I used 87 in it!.. Ran like total s**t after the first week I had it!.. I took it back to the dealership and had the mechanic look at it!.. He told me that there is nothing wrong with the car, but asked me what type of gas am I using?.. I said 87!.. He tells me that he has the exact same year, and model, and that he has found that it will run like s**t unless he puts 93 in it and suggested I do the same!.. Even though the manufacturer says to use 87!.. So I started using nothing but 93 in it and never had a problem!.. Two years ago my dad had to use my car for awhile and he put 87 into it!.. And the car started running like s**t again!..
He calls me up to tell me how the car is running and I told him he needs to put 93 in it!.. He did and it started running just fine again!..

Basically you know how your car runs so use the type of gas you feel is best for it!..

---------- Post added at 05:36 AM ---------- Previous post was at 05:32 AM ----------

Also the only difference between the fuel ratings is just the octane!.. The detergency of the fuel is the same!..
 

·
Registered
Joined
·
903 Posts
Basically you know how your car runs so use the type of gas you feel is best for it!..
so you saying just neglect what the Manufacturer says? so i should also run some 245 55 17's as tires too, and inflate to 40 psi?

im not bashing you dont think I am, but there is a reason why it is noted as Manufacturer's Recommendations! They dont just throw random numbers out there to just get by.

all I am saying is if you want to waste the money on extra gas, to each is there own. but there is no gain whatsoever when it comes to this.
 

·
Registered
Joined
·
3,257 Posts
Topless04GT said:
so you saying just neglect what the Manufacturer says? so i should also run some 245 55 17's as tires too, and inflate to 40 psi?

im not bashing you dont think I am, but there is a reason why it is noted as Manufacturer's Recommendations! They dont just throw random numbers out there to just get by.

all I am saying is if you want to waste the money on extra gas, to each is there own. but there is no gain whatsoever when it comes to this.
You need to read what I posted because you took it out of context!..

---------- Post added at 11:26 AM ---------- Previous post was at 11:10 AM ----------

First off recommendations are just that!.. Secondly we are talking about different fuel types and you start about tires?!?...

---------- Post added at 11:30 AM ---------- Previous post was at 11:26 AM ----------

Also when talking about fuel types (octane rating) the recommendation given by the manufacturer is a minimum!.. Not the max!..
 

·
Registered
Joined
·
64 Posts
Tons of misconception here. 93 is NOT a better fuel than 87. 93 will make LESS power than 87. You will not get more fuel economy with 93 over 87.

The ONLY thing 93 octane has over 87, is the ability to reduce engine knock, and with the exception of the 2011 Mustangs and up, they were designed and factory tuned to perform best on 87 octane. Run the least amount of octane you can without engine knock for the best performance.
 

·
Registered
Joined
·
165 Posts
I'm sorry not trying to be a d bag or anything but you people that think higher octane is better for your car when 1) it doesn't require it and 2) there is nothing wrong mechanically with your car are RERERREETTAARRDDSS! Thanks! :) (yeah I'm a little cranky today!)
 

·
Registered
Joined
·
64 Posts
I'm sorry not trying to be a d bag or anything but you people that think higher octane is better for your car when 1) it doesn't require it and 2) there is nothing wrong mechanically with your car are RERERREETTAARRDDSS!
I wouldn't call any of the guys here "retards", just slightly uneducated enough in fuel/engine/combustion theory. ;)
 

·
Registered
Joined
·
165 Posts
mtrsprt said:
I wouldn't call any of the guys here "retards", just slightly uneducated enough in fuel/engine/combustion theory. ;)
Yeah I can agree with that!
 

·
Registered
Joined
·
3,257 Posts
mtrsprt said:
Tons of misconception here. 93 is NOT a better fuel than 87. 93 will make LESS power than 87. You will not get more fuel economy with 93 over 87.

The ONLY thing 93 octane has over 87, is the ability to reduce engine knock, and with the exception of the 2011 Mustangs and up, they were designed and factory tuned to perform best on 87 octane. Run the least amount of octane you can without engine knock for the best performance.
Then explain to me why both my cars run better off 93 and get better times at the strip!..

And to the guy referring to every one as retards!!! I didn't insult you so you have no ****ing need to insult me or anyone else on here!!!

---------- Post added at 02:18 PM ---------- Previous post was at 02:11 PM ----------

Also both my cars get better mpg when running 93 vs 87!.. So explain that part to!.. Not trying to argue just simply stating actual facts and figures about my cars!..
 
1 - 20 of 39 Posts
Top