What octane do you use

[BmacIL]

if Ford recommends 87 for "normal" duty, and higher octane for "severe" duty, then it seems like they expect at least some potential for detonation and timing pull on 87 / severe.

So what is "severe" duty ?
5500-6500 RPM?
WOT in 6th gear?

Track driving and things like driving in the mountains at GVW.

Sponsored

 

[FordTechOne]

I'm going to sit and argue with some know it all on the internet because I really don't care...

But with the statements above you've proved to me hands down.... you know nothing of modern technology and tuning. You have no idea on how the ECU works or timing corrections. Keep goole searching and reading internet articles. You might catch up at some point.

Go tell any good tuner that all engines don't knock and see what they tell you. :lol:

Those are quite bold statements from someone who clearly doesn't understand the effects of low octane in a high compression, high performance engine.

You were proven wrong, son. Instead of admitting that you were incorrect, you have apparently resorted to baseless accusations, which proves that you are quite desperate to save face; nothing more.

So now I "know nothing of modern technology and tuning"? I "know nothing of how the ECU works of timing corrections"? Ironically, it is you who appears to know absolutely ZERO about how "modern technology" and "timing corrections" operate.

I've clearly explained it multiple times....the PCM (That's the Ford designation by the way, not a generic term as you've used) retards timing when it receives an input from the knock sensors. When you run cheap low octane (87/89) fuel, the knock sensors say busy as they are constantly reporting knock conditions to the PCM, which further reduces horsepower and torque output until the knock condition is under control. It's not rocket science, and it's a hell of a lot more than a "1%" loss in power.

Having done my fair share of tuning myself, I find it absolutely hilarious that you reference "telling any good tuner" anything; once again that's all hearsay. Just like your entire post where you presented 3rd party information and pretended that it was the facts, and then attempted to call me out when I informed you that you were incorrect.

In case you didn't notice, you've lost...you did nothing more than attempt to convince people that running shitty low octane fuel in their high performance engines is not detrimental. Not sure what you're prerogative is, but it's become more than clear that you don't have the slightest clue what you're talking about.

 

[1BadAss16CS]

In case you didn't notice, you've lost...you did nothing more than attempt to convince people that running shitty low octane fuel in their high performance engines is not detrimental. Not sure what you're prerogative is, but it's become more than clear that you don't have the slightest clue what you're talking about.

:lol: :lol: :lol: What did I lose? What are you 5 years old?

Here, educate yourself and watch this video. Listen closely for key terms such as "long term trim" and how it works. This is a third party company doing this. And one last thing... you're the one talking out of your ass about 87 Octane. People here are not all on the race track everyday and you can safely run 87 ALL DAY LONG and for the life of the engine if you want with absolutely zero problems under normal useage. If you want to prove me wrong show me 1 single bone stock engine failure due to running 87 octane. More specifically detonation causing the failure. The coyote has been out since 2011 so I'm sure you can find one. I'll make it even better... find me one single melted spark plug on a bone stock Coyote. Surely if 87 was "detrimental" you can find me some melted plugs. :lol: I hear your boss at the Ford Quick Lane calling you back to do some more oil changes.



[ame]

 

[FordTechOne]

:lol: :lol: :lol: What did I lose? What are you 5 years old?

Yes, you lost the "argument" that you started. You try and pretend that the people calling you out for the misinformation you post are young or immature, yet that has nothing to do with it. It's quite obvious you are doing nothing more than grasping at straws at this point.

Here, educate yourself and watch this video. Listen closely for key terms such as "long term trim" and how it works. This is a third party company doing this. And one last thing... you're the one talking out of your ass about 87 Octane. People here are not all on the race track everyday and you can safely run 87 ALL DAY LONG and for the life of the engine if you want with absolutely zero problems under normal useage. If you want to prove me wrong show me 1 single bone stock engine failure due to running 87 octane. More specifically detonation causing the failure. The coyote has been out since 2011 so I'm sure you can find one. I'll make it even better... find me one single melted spark plug on a bone stock Coyote. Surely if 87 was "detrimental" you can find me some melted plugs. :lol:

Ironically, the only person who needs to be educated here is you. You're throwing around terms like "Long Term Fuel Trim" and pretending that you have some idea what it means, yet it's not even relevant to the discussion. Then you post your little video about an aftermarket engine management system, as if that's even remotely similar to a stock 5.0 Mustang with a Copperhead PCM.

Unless you have access to manufacturer warranty data, there is no way to know whether a stock Coyote ever had an engine failure from using low octane fuel. Unlike your little world, not everything revolves around the internet. There is always a chance for engine damage on a high compression or forced induction engine when fuel octane is low. That's a fact. It makes no sense to spend a significant amount of money on a high performance vehicle and then fill it with low octane.

It's quite obvious by now that you are nothing more than an internet "expert", meaning you have no experience or education in the engineering or automotive field. You're simply regurgitating the crap that you've watched on the internet and pretending to know something that everyone else doesn't. Unfortunately for you, I've been in this field longer than you've been alive, and I can see right through your baseless argument and made up statistics and sources.

Obviously, that's made you quite angry:

I hear your boss at the Ford Quick Lane calling you back to do some more oil changes.

The fact that you need to resort to insults to try and make your point further proves that you have absolutely no business even commenting on this topic. Step away from the keyboard and stop posting about things that you don't even have the slightest clue about. You're doing everyone on this forum a disservice with your inaccurate information. Which, of course, you never addressed, because you can't seem to just admit when you're proven wrong. Very sad :tsk:

 

[ob1]

:lol: :lol: :lol: What did I lose? What are you 5 years old?

Here, educate yourself and watch this video. Listen closely for key terms such as "long term trim" and how it works. This is a third party company doing this. And one last thing... you're the one talking out of your ass about 87 Octane. People here are not all on the race track everyday and you can safely run 87 ALL DAY LONG and for the life of the engine if you want with absolutely zero problems under normal useage. If you want to prove me wrong show me 1 single bone stock engine failure due to running 87 octane. More specifically detonation causing the failure. The coyote has been out since 2011 so I'm sure you can find one. I'll make it even better... find me one single melted spark plug on a bone stock Coyote. Surely if 87 was "detrimental" you can find me some melted plugs. :lol: I hear your boss at the Ford Quick Lane calling you back to do some more oil changes.

This video has not much merit especially from Subaru who has had a notorious problem with bad head gaskets. They even have a coolant additive to help with their head gasket problems.
Not much merit here like the WRX I smoked the other day. :ford:

 

[AZ_Ryan]

Yes, you lost the "argument" that you started. You try and pretend that the people calling you out for the misinformation you post are young or immature, yet that has nothing to do with it. It's quite obvious you are doing nothing more than grasping at straws at this point.



Ironically, the only person who needs to be educated here is you. You're throwing around terms like "Long Term Fuel Trim" and pretending that you have some idea what it means, yet it's not even relevant to the discussion. Then you post your little video about an aftermarket engine management system, as if that's even remotely similar to a stock 5.0 Mustang with a Copperhead PCM.

Unless you have access to manufacturer warranty data, there is no way to know whether a stock Coyote ever had an engine failure from using low octane fuel. Unlike your little world, not everything revolves around the internet. There is always a chance for engine damage on a high compression or forced induction engine when fuel octane is low. That's a fact. It makes no sense to spend a significant amount of money on a high performance vehicle and then fill it with low octane.

It's quite obvious by now that you are nothing more than an internet "expert", meaning you have no experience or education in the engineering or automotive field. You're simply regurgitating the crap that you've watched on the internet and pretending to know something that everyone else doesn't. Unfortunately for you, I've been in this field longer than you've been alive, and I can see right through your baseless argument and made up statistics and sources.

Obviously, that's made you quite angry:



The fact that you need to resort to insults to try and make your point further proves that you have absolutely no business even commenting on this topic. Step away from the keyboard and stop posting about things that you don't even have the slightest clue about. You're doing everyone on this forum a disservice with your inaccurate information. Which, of course, you never addressed, because you can't seem to just admit when you're proven wrong. Very sad :tsk:

Dude seriously take it down a notch. You're literally accusing him of everything your doing. You were the one who was flinging insults and getting bent ot of shape along time ago. And the only one here who is "mad" is clearly you. The rest of us are eating pop corn and laughing.

And what is it with you an "winning" an argument? Stop taking it so personally.

As for the subject - the only one here claiming low octane fuel with hurt your coyote engine is you. The burden proof is on you to prove it. Show us some evidence of a coyote engine being damaged from low octane fuel and you will win your precious argument. Until then make like frozen and let it go.

 

[2015 Silver GT]

As for the subject - the only one here claiming low octane fuel with hurt your coyote engine is you. The burden proof is on you to prove it. Show us some evidence of a coyote engine being damaged from low octane fuel and you will win your precious argument.

This.

Ford says 87 octane is fine to use. I'll take their word over some knucklehead on the internet who clearly is uninformed judging from their posts.

 

[bluedailyEB]

93 every time

 

[Terminator2]

It costs an extra $5 a fill to use 93 vs 87 which is not a huge deal. Not sure why it's not affordable. Mines running an aggressive tune so I run 93 only.

 

[Sda3]

Octane discussions always go like this on every forum. Use at leas the minimum manufacturer recommended fuel in your vehicle. In this case it is 87. Yes the car will run less timing using 87, which means less power. I for one chose to run 91/93. The ECU can add more timing which means more power. Is 87 detrimental to your motor? Ford thinks not, so who are any of us to say it is?

 

[mustang1]

I haven't seen much evidence here that the ECU will add more timing for more power with 91/ 93 octane. If it did, then wouldn't that cancel out much of the benefit of an aftermarket 91/93 engine tune ?

 

[Sda3]

I haven't seen much evidence here that the ECU will add more timing for more power with 91/ 93 octane. If it did, then wouldn't that cancel out much of the benefit of an aftermarket 91/93 engine tune ?

I mean as compared to the timing it runs with 87. I am new to the mustang and the v6 and v8 motors may be different and I could be totally wrong. However, with the turbo motors the ECU definitely can add more timing on 91/93 than they do on 87 octane.

 

[mustang1]

there is plenty of evidence that the turbo motors / Ecoboost adds more timing and more power on 91/93. I would definitely run 91/93 on FI engines. But the question remains for NA engines.

 

[mada808]

It costs an extra $5 a fill to use 93 vs 87 which is not a huge deal. Not sure why it's not affordable. Mines running an aggressive tune so I run 93 only.

Affordability is probably not an issue with most people here. It's "waste" that people are concerned with. Why spend an extra $400/yr on gas when all you do is drive to work and back? Wealthy people stay wealthy by not spending money on dumb things(for the most part ;)). Of course, 400/yr is not much, but add that too the endless other non essential annnnnnd I think you get my point. Gas up with whatever you want. No one cares, literally.

 

[Jay-rod427]

91 is the best we have around here:( stock tune tho, and regularly put her through the full rpm range!

Sponsored