Ethanol in our 4.0's - Jeep Cherokee Forum

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Ethanol in our 4.0's

Old 01-31-2019, 02:53 PM
  #1  
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Default Ethanol in our 4.0's

Hi all.
Just curious, has anyone seen any research or info on the possible negative affects of this new era of fuels with the 10% ethanol content "blend" with older motors like our 4.0s ?
And/or if there is a good way to help combat this for extending their life as I'm guessing they were not designed to burn that stuff.
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Old 01-31-2019, 06:25 PM
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We have had Ethanol in my area for years. Cant' get a way from it. I have yet to have any issues with any of my vehicles due to it. For any of my vehicles that sit with gas in them for extended periods of time I use the blue Sta-bil which is for Ethanol gas.
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Old 01-31-2019, 11:07 PM
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There is no ill effect you need to worry about and all Jeep models from 1986 on are e10 compatible . The only thing you might worry about it in is winter storage in your lawn mower , weedeater , generator , boat etc it doesnt store near as well as old gas and tarnishes etc faster than non ethanol gasoline . You likely won’t have any issue over just winter storage I never do ... but if you’re concerned drain your gas prior to storage or long periods of sitting .
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Old 02-01-2019, 01:59 AM
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E10 has been around longer than than most people realize.


Last edited by mikesignal; 02-01-2019 at 02:02 AM.
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Old 02-01-2019, 07:01 AM
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The motor is fine. It's the fuel hoses that go to pot. I don't care how long it's been around.

I go to Maverick and buy their ethanol free gas.
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Old 02-01-2019, 11:16 AM
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When ethanol sits and contacts water it gells up. At least that is how it was explained to me. Big problem for marine engines.
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