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e85 long term effects
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10-17-2019, 09:43 PM | #1 |
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e85 long term effects
So I am running 100% e85 occasionally. Everyone knows added power blah blah blah. But what bad does it do to our engines long term? Any advice or personal stories would be much appreciated. thanks
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10-17-2019, 09:50 PM | #2 |
No one sleep in Tokyo
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Drives: 2011 E90 328i//1995 E34 530i
Join Date: Oct 2018
Location: San Diego, California -> Austin, Texas
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Do you have a proper tune for it, port injection conversion, upgraded fuel pump, upgraded fuel lines/filter?
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2011 E90 328i, 1995 E34 530i, 1992 E32 740i, 1991 E34 525i
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11-10-2019, 01:13 PM | #4 |
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11-10-2019, 06:10 PM | #5 | ||
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If the fuel lines (and associated parts) are made for normal fuel, the ethanol degrades the rubber/plastics of those parts at a higher rate as compared to normal fuels. In other words, the fuel parts should be "E85 approved/tested" in order to have normal reliability. Update: Looks like fuel systems in the N54/N55 engines are most likely okay... https://www.bmwn54tuners.com/%E2%80%...thanol-blends/ "Does your BMW have stainless steel fuel lines? There are also debates on whether or not e85 will degrade fuel lines, seals, etc. To be on the safe side, I would recommend having stainless steel lines and injectors. Most newer, turbocharged, direct-injected BMW engines feature stainless steel lines and injectors that will not be affected by ethanol."
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11-10-2019, 07:24 PM | #6 |
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Some say that ethanol isnt like the ethanol in the past and most cars nowadays are built to handle the corrosion ethanol causes but it is still recommended to run a full tank of regular gasoline to flush it out every now and then
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11-11-2019, 07:10 PM | #7 |
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In terms of getting e85 supported fuel components, you're out of luck when it comes to the DI injectors and the hpfp. E85 creates quite a bit of load on the HPFP and a mechanical pump can only spin so fast which is why the VTT shotgun, PI, helix overdrive all exist. You could argue e85 causes more blow by and thins out oil but so does gasoline. I've ran e60 for 3-4 years with no new issues aside from the standard hpfp/injector replacement.
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11-12-2019, 07:18 PM | #8 | |
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11-14-2019, 10:32 PM | #9 |
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No thanks, i love my shotgun. Rail pressure is solid. I was running 100% e85 but there isnt much of a gain to make the mpg hit worth it. I daily the car.
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11-15-2019, 10:00 AM | #10 |
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