GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Page 1 of 3 123 LastLast
Results 1 to 10 of 23

Thread: Flexfuel

  1. #1
    Sr. Mechanic asstda2b's Avatar
    Join Date
    Aug 2005
    Location
    Los Angeles, CA
    Posts
    159

    Default Flexfuel

    Does anyone own one.......I plan on buying one, esp. out here in traffic hell. I wwanted to know if you really see a difference in fuel. Can't drive a TB forever.
    STEPHANIE
    Los Angeles, California
    2004 Trailblazer (DJM drop kit, K&N air intake, 18' Kaotic Wheels, full system with Sirius and also custom
    sub installed for cleaner look, tint all the way around, JBA exhaust...still looking for more to do)

    Had until it was stolen:
    1990 lowered Chevy Silverado
    Also Have:
    2002 Chevy Suburban
    1992 Chevy S-10
    1955 Chevy Bel Air
    sad to say: also a 1991 Ford F-250

  2. #2
    Sr. Apprentice Akula682's Avatar
    Join Date
    Dec 2007
    Location
    Niagara Falls NY
    Posts
    69

    Default

    what difference are you talking about?

    1 Gallon of Ethonal has less BTU's than 1 Gallon of Gasoline, So you will see a decrease in MPG's (even when using E85). The payoff is that E85 costs less than gasoline.

    here in Niagara Falls E85 is around 1.90 to 1.95 while gasoline is about 2.10 or so.
    Josh

    "Do what you can, With what you have, Where you are." TR.

    2007 Chevy 2500 6.6 LMM
    1998 HUMMER- sold
    1998 F150- sold

  3. #3
    Legend tlperry68's Avatar
    Join Date
    Oct 2008
    Location
    Huntington Beach, CA
    Posts
    1,504

    Default

    I know a lady that has one and she claims that she can't tell a difference but the fuel MPG wasn't impressive. Hope that helps for second hand knowledge.
    Trevor - Huntington Beach, CA
    2007 GMC 2500 4X4

  4. #4

    Default

    IMO it is not worth running you may save the 20 cents or whatever but you lose MPG and performance as well. Not worth it to me. Just a side note Gas is 1.30/gal here in KS now...

  5. #5
    Sr. Apprentice Akula682's Avatar
    Join Date
    Dec 2007
    Location
    Niagara Falls NY
    Posts
    69

    Default

    Quote Originally Posted by 00z71 View Post
    IMO it is not worth running you may save the 20 cents or whatever but you lose MPG and performance as well. Not worth it to me. Just a side note Gas is 1.30/gal here in KS now...

    How are you loosing performance? E85 is rated at 105 octane. (+/- 2 or 3 points)

    and gas is 1.30... whats diesel running at?
    gas is about 2.10/E85 is about 1.90 and diesel is still about 3.00
    Josh

    "Do what you can, With what you have, Where you are." TR.

    2007 Chevy 2500 6.6 LMM
    1998 HUMMER- sold
    1998 F150- sold

  6. #6

    Default

    my truck has the flexfuel option to run regular gas or e85. as far as mpg it runs pretty good on reg gas switching to the v4 on flat surface and going down hills.still looking for an e85 station around me to test the e85 in the truck for proformance.
    Peter

    2007 Silverado LT Crew NNBS 5.3
    Stock 20"
    Black Powdercoated Billet Gas Door
    LineX Bedliner
    Go Rhino Dom II Bars
    Work in Progress
    1952 Chryler 2dr Windsor } Mine and Dad's
    Former Cars
    2000 civic hx Moded
    1993 Probe simi moded
    1985 Nissan 4x4 Kingcab

    So*Cal Group

  7. #7
    Jr. Mechanic Sooner's Avatar
    Join Date
    Oct 2007
    Location
    Oklahoma City Suburbs
    Posts
    94

    Default

    I think the E85 is more of a green thing. I'm not an expert on it. But I've swapped several engines over to methanol and seen as much as a10% increase in HP. That's an estimate considering the higher octane rating allowed us to run higher compression ratios and timing. It also runs cooler and is somewhat safer than gasoline. However, it takes almost twice as much methanol to get the correct air-to-fuel ratio as gasoline. Therefore, our MPG (if we happened to be concerned with it) were nearly cut in half. I would think that E85 would have to be priced pretty cheap to make it economical (at 100% alcohol you'll burn up nearly twice as much, I'm too lazy to do the math at 85%). So, I'm thinking the E85 is more for those folks that want to pay extra to save the environment.
    Last edited by Sooner; 12-11-2008 at 02:53 PM.
    2008 Chevy Tahoe
    2007 Nissan Titan CC
    1997 Chevy 1500 EC (just passed 200,000)

  8. #8
    Legend tlperry68's Avatar
    Join Date
    Oct 2008
    Location
    Huntington Beach, CA
    Posts
    1,504

    Default

    Quote Originally Posted by adidasboy918 View Post
    my truck has the flexfuel option to run regular gas or e85. as far as mpg it runs pretty good on reg gas switching to the v4 on flat surface and going down hills.still looking for an e85 station around me to test the e85 in the truck for proformance.
    I got a hippie in the family that says there is a E85 staton in Los Angeles City and one bio diesel station. Haven't seen them yet.
    Trevor - Huntington Beach, CA
    2007 GMC 2500 4X4

  9. #9

    Default

    Quote Originally Posted by tlperry68 View Post
    I got a hippie in the family that says there is a E85 staton in Los Angeles City and one bio diesel station. Haven't seen them yet.
    Yeah I know there is one in LA, San Diego somewhere, and farther up the coast. All are a little farther then I want to drive just to get gas. lol
    Peter

    2007 Silverado LT Crew NNBS 5.3
    Stock 20"
    Black Powdercoated Billet Gas Door
    LineX Bedliner
    Go Rhino Dom II Bars
    Work in Progress
    1952 Chryler 2dr Windsor } Mine and Dad's
    Former Cars
    2000 civic hx Moded
    1993 Probe simi moded
    1985 Nissan 4x4 Kingcab

    So*Cal Group

  10. #10
    Master Mechanic
    Join Date
    Oct 2008
    Location
    Brandon, FLA
    Posts
    747
    Blog Entries
    1

    Default

    I have the Flex Fuel/ standard fuel system and have not had the opportunity to try the fuel as it is not here in Tampa that I know of. Also, various posts here have presented problems about flex fuel and the decrease in MPG and performance issues, along with engine problems. With apparent savings of approx. 20 cents per gallon, not a real checkbook savings for me.....

    Jeff
    JMoney02

Page 1 of 3 123 LastLast

Similar Threads

  1. Oil capacity for 5.3 FlexFuel V8
    By Bigchief in forum Chevy Suburban Forum (GMC Yukon XL)
    Replies: 3
    Last Post: 05-07-2008, 11:07 AM
  2. Replies: 0
    Last Post: 02-10-2008, 12:20 PM
  3. Replies: 0
    Last Post: 02-10-2008, 12:12 AM
  4. Replies: 0
    Last Post: 02-08-2008, 11:50 AM
  5. Replies: 0
    Last Post: 02-06-2008, 11:30 PM

Tags for this Thread

Posting Permissions

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