E85 longevity/reliability

[Alizecha]

Merci Wildhorse.
Je suis allé voir sur le site, il ne travaille pas avec le V6. Juste la GT et l'Ecoboost.
Comme une tune paraît risqué,
j'essaye de voir jusqu'où je peux augmenter le % de E85 en restant dans les limites de régulation de l'ECU.
80% de E85 avec 17-21% Longft (long time fuel trim) me paraît encore safe.
Il paraît que sur les Mustang le CEL s'allume à 35%.
Quelqu'un peut confirmer ?

Thanks Wildhorse.
I went to look on the site, it doesn't work with the V6. Just the GT and the Ecoboost.
As a tune seems risky,
I'm trying to see how far I can increase the % of E85 while staying within the ECU's regulation limits.
80% E85 with 17-21% Longft (long time fuel trim) still seems safe to me.
It seems that on Mustangs the CEL lights up at 35%.
Can anyone confirm?

Sponsored

 

[sms2022]

Merci Wildhorse.
Je suis allé voir sur le site, il ne travaille pas avec le V6. Juste la GT et l'Ecoboost.
Comme une tune paraît risqué,
j'essaye de voir jusqu'où je peux augmenter le % de E85 en restant dans les limites de régulation de l'ECU.
80% de E85 avec 17-21% Longft (long time fuel trim) me paraît encore safe.
Il paraît que sur les Mustang le CEL s'allume à 35%.
Quelqu'un peut confirmer ?

Thanks Wildhorse.
I went to look on the site, it doesn't work with the V6. Just the GT and the Ecoboost.
As a tune seems risky,
I'm trying to see how far I can increase the % of E85 while staying within the ECU's regulation limits.
80% E85 with 17-21% Longft (long time fuel trim) still seems safe to me.
It seems that on Mustangs the CEL lights up at 35%.
Can anyone confirm?

there is no benefit to doing that. You are not gaining power on the factory tune just by mixing in E85.

 

[K4fxd]

there is no benefit to doing that. You are not gaining power on the factory tune just by mixing in E85.

It will give full spark so it depends on the quality of your gas.

 

[Alizecha]

I'm not looking for a power gain. If you knew the small roads of my south-west region (Gers, Tarn...)
The turns often follow one another every 25-50 meters with sometimes the surprise of encountering at the exit of a turn without visibility: a deer or a family of wild boar not to mention tractors, bicycles and walkers...
And that's my daily life, I almost never take the highways.
So 305hp is more than enough to make me happy.
I juste want to use as more as possible E85, because in France the E85 cost 1$ and the 91 2$

 

[Alizecha]

I have also change my sparks for New iridium.
I dont understand why at 50mil/h regular i have 2.1gal /62miles
Normaly with 80% E85 i need to be around 2.6-2.7 galons right?

 

[SnowFox]

Good to know! I drive 25 miles each way for work, so between my distance and potential long term issues, I’m hesitant. Definitely tuning at least 93 to get the shifts better. I have the A10.

The E85 its self shouldn't lower your reliability/longevity in any meaningful way if at all.

In some instances(not all) one could easily argue that a proper E85 tune is as safe if not safer than say 93 tune.


The higher Octane in E85 allows the timing to be advanced more. Since it's more stable than 93 and better at resisting Auto ignite.

Of course if the tuner runs each tune to the edge of knock based on said stability. Then neither is more or less reliable than the other.

That being said with an E85 tune you can have a tuner lower the advance and have a little more "head room" while still probably outperforming 93 tune while being safer.

This is assumeing one has proper E85 parts or mustang year. Additionally the E85 is tested to ensure its meeting minimum ethanol % outlined by the tuner. For me when on the E85 tune it's 75% minimum. On flex it doesn't matter.

Some people think that E85 will have adverse and catastrophic effects. But I'm willing to bet in many of those instances a mistake was made by the user (probably people assuming that all E85 has a consent unchanging percentage and never bothering to test before filling OR peope just getting the tune in earlier S550s years and assuming the fuel system was capable of handling the Increased need)

But that's just my take. Others will have equally relevant opinions opposite of mine I'm sure.

 

[sdskinner73]

The E85 its self shouldn't lower your reliability/longevity in any meaningful way if at all.

In some instances(not all) one could easily argue that a proper E85 tune is as safe if not safer than say 93 tune.


The higher Octane in E85 allows the timing to be advanced more. Since it's more stable than 93 and better at resisting Auto ignite.

Of course if the tuner runs each tune to the edge of knock based on said stability. Then neither is more or less reliable than the other.


That being said with an E85 tune you can have a tuner lower the advance and have a little more "head room" while still probably outperforming 93 tune while being safer.

This is assumeing one has proper E85 parts or mustang year. Additionally the E85 is tested to ensure its meeting minimum ethanol % outlined by the tuner. For me it on the E85 tune it's 75% minimum. On flex it doesn't matter.

Some people think that E85 will have adverse and catastrophic effects. But I'm willing to bet in many of those instances a mistake take was made by the user (probably people assuming that all E85 has a consent unchanging percentage and never bothering to test before filling OR peope just getting the tune in earlier S550s years and assuming the fuel system was capable of handling the Increased need)

But that's just my take. Others will have equally relevant opinions opposite of mine I'm sure.

Thanks for the info. I’ve only seen a few videos showing engine rebuilds and “how bad e85 can be on the engine”. Doesn’t mean that was the only factor of course. Easy to make a video showing what you want without giving all the facts though.

 

[SnowFox]

Thanks for the info. I’ve only seen a few videos showing engine rebuilds and “how bad e85 can be on the engine”. Doesn’t mean that was the only factor of course. Easy to make a video showing what you want without giving all the facts though.

Yeah I've seen videos like that as well. Sometimes I feel some are more click bait. Or they are leaving out some relevant variables. But hard to ever know for sure, but I do see similar videos for people running different brands of gas. It's so convoluted on places like YouTube it's hard to decide where the good information is hiding

 

[sdskinner73]

Yeah I've seen videos like that as well. Sometimes I feel some are more click bait. Or they are leaving out some relevant variables. But hard to ever know for sure, but I do see similar videos for people running different brands of gas. It's so convoluted on places like YouTube it's hard to decide where the good information is hiding

Exactly! I find much better information here usually. Seems like e85 will be just fine. Now I need to decide what to do first. Tune or wheels and tires. I’ll figure it out. Taking my time, it’s all a process.

 

[chuckhammer]

I've been running E85 full time for a year now. Nearly 6k miles. It's always tested at 80% or higher ethanol content. Been changing oil when the indicator says 50% life remaining. I try hard to always get the oil up to 185° or higher for several minutes before shutting off the engine. They say short trips without enough time to vaporize the water and unburned fuel from the sump is the reason E is harder on oil. Short trips on E are a big no-no.

 

[Alizecha]

Thanks for your expérience.
You are running with a special tune or a flex fuel box or without anyting as me?
Do you know your long time fuel trim at 80%?

 

[Pistol_91]

I ran e85 N/A for 25k miles. Changed oil like normal. Didn't change it early like some may. Never had any issues.

 

[chuckhammer]

Thanks for your expérience.
You are running with a special tune or a flex fuel box or without anyting as me?
Do you know your long time fuel trim at 80%?

Forgot to mention that I'm on an E85 tune from Shoemaker. It's in my signature. Don't believe you can run E content this high on the stock Gen 3 Coyote Mustang tune.

 

[daSNAK3]

I’ve ran E85 for about 10k miles now. I’ve sent two samples to Blackstone, one @ 3650 miles and half the miles were on 93 octane, they told me to try going to 5,000 miles.. next one I ran 3800 miles using E85 the whole time and again they suggested trying to go to 5,000 miles.

I run 5w40 Pennzoil Platinum Euro. I always get up to operating temp and usually my drives are around 10-30 miles. I’ve never had any water or anything form in my catch can either.

I’m going to go to 4,500-5,000 this next oil change and send another sample in and see what they say.

 

[SnowFox]

I think some of the worries people have about E85 stems from allot of old information making it's way forward to present day. Some of it is relevant, some not. It for sure requires a bit more involvement from the user to run on a car not actually made to run it. But like most things once you find the rhythm to it it's not a problem.

Most modern engines are well designed and built to handle lots of changing variables from fuels to environment ect. On the other hand... design and tech has come so far that the tolerances on high compression engines are so tight when something does go wrong it seems to go very wrong very fast.

It's like that person who never gets mad about anything then one day he does and everybody is left in shock by the total freakout. *Looks at co worker*

Sponsored