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Old 05-31-2015, 04:23 PM   #1
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V6 help

So I have the 2015 V6 I was wondering if I should use regular unleaded gas or go the next one up for better results. Any feedback would be excellent.


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Old 05-31-2015, 04:25 PM   #2
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You can use any octane. Personally I use the highest grade octane. It isn't much different over the course of a year so might as well use premium lol
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Old 05-31-2015, 07:36 PM   #3
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Today's standards, if your vehicle states 87 octane, you'll get better performance out of 87... If you're tuned for 93, then obviously for 93..

But every day driving, 87 octane.
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Old 05-31-2015, 08:13 PM   #4
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I doubt you get better performance out of 87 than 93
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Old 05-31-2015, 08:35 PM   #5
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V6 help

Take a peek at this video.

Even on a stock tune you will gain a few HP using 93 octane fuel rather than 87.

http://youtu.be/adSx7MGTecE
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Old 05-31-2015, 08:56 PM   #6
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Facts change every year that new powerplants come out but generally, no gains, no need to run any octane higher than what the manual says or set tune. You WILL gain carbon deposits, loose $$
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Old 05-31-2015, 09:01 PM   #7
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V6 help

The 2015 V6 is the same 3.7 V6 that's in 2011-2014. The only difference is the intake manifold.

So this will hold true for the 2015 also.

EDIT: Skip to 2:45 in the video to see what I'm talking about.
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Old 05-31-2015, 09:12 PM   #8
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Quote:
Originally Posted by robb15033 View Post
You WILL gain carbon deposits, loose $$

This is true for older engines without variable valve timing, but the 2011+ V6 is able to adjust timing up to 60 degrees on the intake side and up to 50 degrees on the exhaust side. So it is able to burn the 93 octane efficiently.
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Old 06-01-2015, 04:39 AM   #9
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I've done the $ per mile experiment 2x and one time my mpg went up one time it stayed the same. Both times were for several tanks. Butt dyno registers no improvement. I tend to run regular unless I'm going out for a extended high speed run.
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Old 06-01-2015, 07:59 PM   #10
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I will bet money, if you do a dyno run bone stock...

87 octane will gain more power than 93 on a stock tune...


Why is that? The vehicle is tuned for 87 octane, thats what it's programmed for. 93, to make more power, it has to be tuned for it, which means bumps timing etc...

Have done it in numeral tests in different vehicles. The only reason why i have ran 93, was because the vehicle was tuned for it, or i got bad gas, and had bag pinging.

You will have more carbon built up on top of the pistons, if you run 93 without a proper tune during normal driving routines.

93 doesn't burn as hot, and therefore you can add more timing til it gets hot.

87 stock is what the vehicle is made to run, so running 93 in a stock car, is pretty useless.


Edit: Yes i understand the vvt, but still won't gain as much.


If a local tuner to me wants to run some tests, i'd be more than welcome to show results lol.

have had arguments and see dyno results on crown vics, and older f bodies and such, 87 for stock made more consistant power than 93..

again 93 just burns cooler.
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Old 06-01-2015, 08:09 PM   #11
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Here is one good read, you can also read the comments on the bottom too.

Tech 101 – Octane: the facts and the fiction behind those higher-priced fuels | Hemmings Daily

You will find hundreds of thousands of posts on this subject
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Old 06-01-2015, 08:16 PM   #12
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Pretty sure older f bodies didn't advance and ****** timing automatically based on fuel octane..
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Old 06-01-2015, 08:42 PM   #13
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V6 help

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Originally Posted by Jon3.7 View Post
I will bet money, if you do a dyno run bone stock...

87 octane will gain more power than 93 on a stock tune...

Before you read the rest of my post, I'll bet you $100 that 93 stock will have more power than 87 stock.

I seriously posted a video with dyno numbers and I don't think anyone has watched it lol.

I guess we have to spoon feed certain things if no one wants to go to 2:43 in the video I just posted.

In summary:

A stock tune with 93 octane in the tank will gain 7 hp and 6 tq over a stock tune with 87 octane.
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Old 06-01-2015, 09:01 PM   #14
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I ran a test with the stock tune and 93 in the car - and with the sensors making the adjustments (unlike previous generation engines) it does indeed show an increase on the dyno chart. It was very near to what the 93 tune showed. Is it enough that you will really notice the difference? Not really, just like the GT; it has an increase but other than 'bragging rights' not enough to really feel it.

On pre 2011 Mustangs the computer didn't make the adjustments that they do now. There wasn't any increase by putting higher octane in the car than it was tuned for. It also didn't "run cleaner" as some say; other than the placebo effect to justify paying more there wasn't anything to gain at all.
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Old 06-02-2015, 06:25 AM   #15
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Quote:
Originally Posted by VIG View Post
Before you read the rest of my post, I'll bet you $100 that 93 stock will have more power than 87 stock.

I seriously posted a video with dyno numbers and I don't think anyone has watched it lol.

I guess we have to spoon feed certain things if no one wants to go to 2:43 in the video I just posted.

In summary:

A stock tune with 93 octane in the tank will gain 7 hp and 6 tq over a stock tune with 87 octane.

according to the video, it gained 4 hp, and lost 4 lbs of tq....


Edit,

I see where they are saying 6lbs of torque, around 6200 rpm.. But if you honestly look at the graph, 87 has a better curve til around 4500- and up. But for every day driving you really won't notice it.



And i do see where vvt "gains more power" but they did say it was two different days as well... environment does change from one day to another.

Not bickering, but just saying it's a very good point.
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Old 06-02-2015, 06:28 AM   #16
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aren't numbers of 4-7 hp within the margins of error of the dyno?
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Old 06-02-2015, 06:46 AM   #17
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Would you spend the extra money for 93 driving a Taurus, because technically that's what motor you've got.
I had a 2014 Taurus Limited. It got 87. 93 is not cleaner gas. It's not secret horsepower juice. It's not premium although that's what it's labeled as a genius marketing tool.
If you're driving a high performance, tuned or motor that calls for 93 then I would use 93.
I will get hate for this but imho the V6 3.7 is not. Oh yes, but it makes over 300HP, how can it not be a high performance engine?
Really? Today's standards, most V6 motors are in that ball park. It wasn't built as a performance engine. It's Fords standard average performer that goes in other Ford products also, Taurus, Explorer, MKZ etc. You can do things to it to make it pretty impressive.....just like every other V6, I4, V8 that gets an aftermarket tune and turbo.
*BUT..like I've said about oil and additives also...If putting 93 in your Mustang makes YOU feel like your car is running better, gets better mpg, or has more power, then by all means, use it! There is a genuine placebo effect and YOU will enjoy driving your Mustang more.
If while buying a private sale used car, the owner explains that's he's always used Mobil 1 synthetic, Zmax and only 93 octane and changed the oil every 3k miles....it feels like you're getting a still brand new, highly maintained and babied steal of a deal.
I use 93 in my Coyote for the sole purpose of feeling like it is being pampered...well treated, won't break down on me, has way more power, is clean and new inside the motor etc.... Probably all false but I spend a lot of time during the day thinking about and driving it, so I feel good doing it. Am I wasting a few bucks? Yup.
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Old 06-02-2015, 11:26 AM   #18
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V6 help

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Would you spend the extra money for 93 driving a Taurus, because technically that's what motor you've got.
I had a 2014 Taurus Limited. It got 87. 93 is not cleaner gas. It's not secret horsepower juice. It's not premium although that's what it's labeled as a genius marketing tool.
If you're driving a high performance, tuned or motor that calls for 93 then I would use 93.
I will get hate for this but imho the V6 3.7 is not. Oh yes, but it makes over 300HP, how can it not be a high performance engine?
Really? Today's standards, most V6 motors are in that ball park. It wasn't built as a performance engine. It's Fords standard average performer that goes in other Ford products also, Taurus, Explorer, MKZ etc. You can do things to it to make it pretty impressive.....just like every other V6, I4, V8 that gets an aftermarket tune and turbo.
*BUT..like I've said about oil and additives also...If putting 93 in your Mustang makes YOU feel like your car is running better, gets better mpg, or has more power, then by all means, use it! There is a genuine placebo effect and YOU will enjoy driving your Mustang more.
If while buying a private sale used car, the owner explains that's he's always used Mobil 1 synthetic, Zmax and only 93 octane and changed the oil every 3k miles....it feels like you're getting a still brand new, highly maintained and babied steal of a deal.
I use 93 in my Coyote for the sole purpose of feeling like it is being pampered...well treated, won't break down on me, has way more power, is clean and new inside the motor etc.... Probably all false but I spend a lot of time during the day thinking about and driving it, so I feel good doing it. Am I wasting a few bucks? Yup.

Technically the coyote is used in the f150. Does that mean the coyote is not a performance engine??
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Old 06-02-2015, 01:00 PM   #19
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Technically the coyote is used in the f150. Does that mean the coyote is not a performance engine??
hell no, it sucks lol
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Old 06-02-2015, 06:45 PM   #20
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hell no, it sucks lol

Haha yeah, that old boat anchor.
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Old 06-02-2015, 06:51 PM   #21
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The old inline 300's are boat anchors, the new coyote motors are land anchors, hahaha. Alright back on topic..
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