GLE Class (W166) Produced 2015-2019

E85 in Flex Fuel GLE 350

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Old Jun 12, 2023 | 10:09 AM
  #1  
Don Rollins's Avatar
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GLE 350
E85 in Flex Fuel GLE 350

Loving the price. Any expert opinions on long term usage?
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Old Jun 14, 2023 | 01:53 PM
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If the manual says it's okay and you don't get any knocking, then enjoy saving the money. If you're towing or driving aggressively, especially at low altitude, then you might want to use higher octane.
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Old Jul 5, 2023 | 02:38 PM
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gle63s
I picked up an e85 flex tune from eurocharged for my gle63s.

Do you know what level of ethanol content is in the tank? For example I run e50 after pumping in half a tank of 93 and half a tank of e85.
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Old Jul 5, 2023 | 08:26 PM
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E85

Originally Posted by PoonFlavordTang
I picked up an e85 flex tune from eurocharged for my gle63s.

Do you know what level of ethanol content is in the tank? For example I run e50 after pumping in half a tank of 93 and half a tank of e85.
my pump info states E85 is 70% Ethanol.

Last edited by Don Rollins; Jul 5, 2023 at 08:27 PM. Reason: Misspelling
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Old Jul 5, 2023 | 08:54 PM
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Don Rollins's Avatar
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From: Missouri,USA
GLE 350
E85

Originally Posted by PoonFlavordTang
I picked up an e85 flex tune from eurocharged for my gle63s.

Do you know what level of ethanol content is in the tank? For example I run e50 after pumping in half a tank of 93 and half a tank of e85.
my pump info states E85 is 70% Ethanol.
Reply
Old Jul 23, 2023 | 08:12 PM
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2008 CL550
I could run E85 in my 2014 ML350 and LOVED it... I could feel a smoother power when using it. The only downside was I'd burn through a tank of gas faster than an Escalade on a mountain road trip... Partly because I was constantly doing 0-60 and highway passing runs, and mostly because it's a lower mileage fuel. Unfortunately, my current 2016 GLE-400 cannot run it.
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