Results 1 to 9 of 9

E85 milage

This is a discussion on E85 milage within the GM Trucks forums, part of the Vehicle Specific category; I keep seeing that in my area that e85 prices dropping and 87 prices going up so I was wondering ...

  1. #1
    Senior Member REVNORR82's Avatar
    Join Date
    Aug 2010
    Location
    NEW ALBANY
    Posts
    1,462

    silver
    2002 ws6 ta convertible

    E85 milage

    I keep seeing that in my area that e85 prices dropping and 87 prices going up so I was wondering if anyone here with a flex fuel truck has ran e85 and was it worth it with the price to milage difference.
    2002 WS6 TA VERT M6 HOOKER SUPER COMPS ORY AND CAT BACK TUNE DONE BY CHARLES AT GREAD TUNNING!!

    2007 Z71 EXTENDED CAB PROGRAMMER COLD AIR
    TRUE DUALS

  2. #2
    Senior Member 5.0THIS's Avatar
    Join Date
    Oct 2001
    Location
    Colorado
    Posts
    3,704

    red
    95 Z28

    Depends on what the price difference is. Lately though, it hasn't been too close to the break even point though. I see a lot of folks claiming about a 30% loss in mileage when running E85.

  3. #3
    Senior Member REVNORR82's Avatar
    Join Date
    Aug 2010
    Location
    NEW ALBANY
    Posts
    1,462

    silver
    2002 ws6 ta convertible

    Well we almost have a $1.50 difference in price right now

  4. #4
    Senior Member 5.0THIS's Avatar
    Join Date
    Oct 2001
    Location
    Colorado
    Posts
    3,704

    red
    95 Z28

    Try it and see then. The change in fuel economy isn't straight across for all vehicles. Just make sure you follow the correct procedure for changing back and forth (so the PCM recognizes the change).

  5. #5
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

    Black & Blue
    '02 WS.6 / '07 Suburban

    Stoich for E10 "gas" is around 14.4:1 (which is what most of the pumps in our area have). For E85, stoich is around 9.7:1 or so. That means the engine running E85 requires about 30% more fuel for every molecule of oxygen as compared to gasoline.

  6. #6
    Senior Member REVNORR82's Avatar
    Join Date
    Aug 2010
    Location
    NEW ALBANY
    Posts
    1,462

    silver
    2002 ws6 ta convertible

    What is the correct procedure

  7. #7
    Senior Member 5.0THIS's Avatar
    Join Date
    Oct 2001
    Location
    Colorado
    Posts
    3,704

    red
    95 Z28

    Quote Originally Posted by REVNORR82 View Post
    What is the correct procedure
    I knew you were going to ask that, and it's been awhile, but cutlass can correct me if I'm wrong, or add in more details. I think the jist of it is that you wait until the tank is near empty on one, fill with the other, and then you need to drive at least a certain distance to make sure the PCM has time to recognize the change in fuels, like maybe 8-10 miles or so, and adjust accordingly. I'm sure the owners manual in any flex fuel car will detail it out.

  8. #8
    Senior Member REVNORR82's Avatar
    Join Date
    Aug 2010
    Location
    NEW ALBANY
    Posts
    1,462

    silver
    2002 ws6 ta convertible

    I have always been kinda against putting corn in my truck but If I could save a few dollars I just might

  9. #9
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

    Black & Blue
    '02 WS.6 / '07 Suburban

    Our Suburban is a flex fuel vehicle, but no one in our area sells E85 so I have never tried it. I can check the owner's manual to see what it says as I will be working on it later today.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Question: Gas milage on stock ws6?
    By terrytheexpert in forum Firebird / WS6
    Replies: 83
    Last Post: 02-24-2016, 10:55 AM
  2. Question: new tune, bad milage
    By dennis ss in forum General Help
    Replies: 14
    Last Post: 07-10-2010, 07:08 AM
  3. Gas milage
    By Black 98 formula ws6 in forum Firebird / WS6
    Replies: 40
    Last Post: 11-25-2008, 05:46 AM
  4. Gas Milage
    By hartsmike in forum LT1
    Replies: 15
    Last Post: 03-13-2008, 07:19 PM
  5. S/c on a high-milage car
    By third_shift|studios in forum Forced Induction
    Replies: 2
    Last Post: 01-28-2007, 05:53 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •