E88 Fuel Okay for 3.6?

[Kracka]

dont use any eth if possible.

Why?

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[AFD]

Good thing this is a Wrangler JL forum. Not sure why you're talking about imports or anything else in this forum. I'm personally not too concerned about some Mitsubishi I owned a decade and a half ago...which I didn't tune to run on E85 (I was tuned for 93 E10).

My C7 & C8 ran best on E30 95-octane, but that's neither here nor there. This thread is about a JL running E15, in which it's fully approved to do so.

Exactly. Which is why I told OP exactly what the JL manual said days ago until somebody chimes in with a blanket statement telling everyone to essentially "ignore your owner's manual for every vehicle you own".

My mention of an older vehicle was just an example that vehicles are designed, manufactured and tuned to run fuels within a certain spec, and that going outside of that spec can actually produce great results - if hardware/ECU changes are also made to safely accommodate it.

But great, I'm absolutely thrilled you're saving a nickel by running 2 to 5% extra ethanol. Just feel it would be more honest if you'd preface your "EPA approved for all vehicles 2001+" statement with "even though many manufacturers have explicitly said not to use it for certain models up until the 2020s."

If you can find the exact legal code that supports the EPA claim, that might actually be useful for somebody fighting a likely unrelated warranty claim while mentioning they intentionally disregarded explicit warnings in their owner's manual. I can't seem to find such a thing anywhere.

 

[Kracka]

 

[AFD]

Yeah, that's what I thought

"E15 approved by EPA only, NOT approved by automaker" - interesting.

https://ethanolproducer.com/articles/annual-rfa-survey-virtually-all-automakers-endorse-e15-19845

 

[mwilk012]

E88 is not the correct terminology. E88 would be up to 88% ethanol.

 

[Heimkehr]

E88 is not the correct terminology. E88 would be up to 88% ethanol.

Yeah, I was thinking the same thing.

The local station that sells E15 (specifically, up to 15% ethanol) does so as an 88 octane fuel. Possibly that distinction confused the OP.

 

[mwilk012]

Yeah, I was thinking the same thing.

The local station that sells E15 (specifically, up to 15% ethanol) does so as an 88 octane fuel. Possibly that distinction confused the OP.

It confuses most people. Almost nobody understands octane ratings or ethanol.

 

[YBABRAT]

Back when E85 was starting to be norm in NV and CA, gas prices for regular were on E85 not regular 87 by mom and pop fill stations. I asked the clerk about it and they said... don't buy it, many complain it costs more, due to more frequent filling. I noticed with the mandate to sell 10%, gas fill ups were more frequent as well, especially in winter driving around 45° F and lower. Heat is energy... when it comes to tuning, both fuels can produce the same power, but ethanol needs more fuel to burn to produce the heat.

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