Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WK2 - > Engine Performance/Intakes/Exhausts

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #37  
Old 04-22-2012, 07:37 PM
Member
 
Join Date: Mar 2012
Posts: 23
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 796
hububub46 is on a distinguished road
Re: E85 can I do anything to improve fuel mileage?

I would not run E85 in any engine wether it is rated for it or not. You are getting a little over 16 MPG and saving only 50 cents a gallon? 1. Ethanol is very caustic to an engine. 2. there is a lot less energy in a gallon of ethanol vs a gallon of gasoline. 3. You would probably get 5 to 6 more miles per gallon with gasoline and I bet if you did the math it would almost be a wash. Aside from the fact that the ethanol is eating up the innerds of your engine much faster than gasoline would... Look for non ethanol regular unleaded gasoline and see what your MPG goes to then. I bet you will be shocked by the emprovement.
__________________

__________________
Reply With Quote
  #38  
Old 04-22-2012, 07:55 PM
Knightrider03m's Avatar
Everyday I'm shuffling
My Jeep: 2012 3.0L
 
Join Date: May 2009
Location: In the mud now
Posts: 6,128
Thanks: 13
Thanked 17 Times in 17 Posts
Rep Power: 323219
Knightrider03m has a reputation beyond reputeKnightrider03m has a reputation beyond reputeKnightrider03m has a reputation beyond reputeKnightrider03m has a reputation beyond reputeKnightrider03m has a reputation beyond reputeKnightrider03m has a reputation beyond reputeKnightrider03m has a reputation beyond reputeKnightrider03m has a reputation beyond reputeKnightrider03m has a reputation beyond reputeKnightrider03m has a reputation beyond reputeKnightrider03m has a reputation beyond repute
Send a message via AIM to Knightrider03m
Re: E85 can I do anything to improve fuel mileage?

The fact is that you will be spending more money using E85 vs normal gas. Why people want/like e85 is pass me.
__________________

__________________
-Marcus-
2012 Ford Escape XLT 3.0L V6 AWD White Suede
Current mods: 6000K HID low/hi beams; Passport 9500ix; Garmin NUVI50 5% Tint; Tinted Tails; Duel Exhaust; Debadge
Future mods: Lowing kit; Engine Tune; Black wheels; Monotone Paint Job
Reply With Quote
  #39  
Old 05-18-2012, 12:17 PM
Member
 
Join Date: Feb 2012
Posts: 28
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 822
airmail96 is on a distinguished road
Cheap race gas.

Sent from my PC36100 using Tapatalk 2
__________________
Jason
07' Jeep Grand Cherokee Limited CRD
Reply With Quote
  #40  
Old 05-19-2012, 06:48 AM
xJoshxx's Avatar
Premium Member
My Jeep: 2012 6.4L WK2
 
Join Date: Mar 2011
Location: Burlington,KY
Posts: 767
Thanks: 24
Thanked 16 Times in 16 Posts
Rep Power: 72308
xJoshxx has a reputation beyond reputexJoshxx has a reputation beyond reputexJoshxx has a reputation beyond reputexJoshxx has a reputation beyond reputexJoshxx has a reputation beyond reputexJoshxx has a reputation beyond reputexJoshxx has a reputation beyond reputexJoshxx has a reputation beyond reputexJoshxx has a reputation beyond reputexJoshxx has a reputation beyond reputexJoshxx has a reputation beyond repute
Re: E85 can I do anything to improve fuel mileage?

only time i would even consider e85 is if it was $2/gal cheaper than pump gas. other than that it's not worth it.
__________________
Reply With Quote
  #41  
Old 05-21-2012, 01:28 AM
frydryce's Avatar
Member
My Jeep: 2011 5.7L WK2
 
Join Date: Dec 2010
Posts: 109
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1319
frydryce is on a distinguished road
Re: E85 can I do anything to improve fuel mileage?

I'm going to leave the politics to the politicians here, but e85 has the potential to create more power in a tuned environment compared to standard gasoline. e85 has the properties of approximately 105 Octane, so if you want to compare prices then compare it to 105 which is about $8/gal out here.

Since Ethanol is Alcohol based it has natural cleaning and cooling capacities, the same reason drag cars use alcohol or meth injection. Even NOS injection - creates more oxygen in the system and has natural cooling properties.

Since the fuel is 105 octane it has less chance of predetonation meaning you can run a more advanced timing map given the same fuel.

So we're not saying that e85 will give you advantages by just putting it into your vehicle. But if you have the ability (currently we do not) to boost or tune your vehicle, e85 becomes the obvious choice. Most basic tunes for our motor require the use of 91 octane so already the price differential becomes significant for e85. Once you boost or run highly aggressive timing maps you'll need higher octanes and thus e85 is the only choice unless you enjoy paying $8/gallon.

So yes, for a stock vehicle I wouldn't vote for e85 unless the price is more than 25% cheaper. But once you start tuning, e85 is obvious.
__________________

__________________
the more you learn, the more you discover how little you actually know
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Fuel mileage impressions 08JeepGC Engine Performance/Intake/Exhaust 13 01-14-2012 11:04 PM
Tweaks to improve the JGC NHman Grand Cherokee - WK2 - 31 08-29-2011 05:30 PM
Your Lowest Fuel Mileage EVIC Readouts...the bottom line! justin1569 Grand Cherokee - WK2 - 36 12-29-2010 12:47 PM
When can we expect better fuel mileage? Jeepleap Grand Cherokee - WK2 - 40 10-14-2010 08:16 AM
Unbelievable fuel mileage...... AB Jeepster Export & Diesel Powered Jeep Models 6 07-07-2010 03:32 AM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 08:06 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community