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What grade of fuel do you use?

Discussion in '1st Gen. Tacomas (1995-2004)' started by agrant2312, Mar 1, 2012.

  1. Mar 1, 2012 at 6:49 AM
    #1
    agrant2312

    agrant2312 [OP] Well-Known Member

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    I usually run premium and sometimes I feel like my gas mileage is worse. What do you guys use and what's your mpg usually like?
     
  2. Mar 1, 2012 at 6:50 AM
    #2
    resq330

    resq330 El' Capi-Tan

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    I always run regular 87...My mpg isn't great. Usually around 250-260 miles on one tank.
     
  3. Mar 1, 2012 at 11:37 AM
    #3
    twfsa

    twfsa Well-Known Member

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    I am mixing every other fill up 87 reg and 89 ethanol, just to see if my mileage slips, summer in town no highway 17.6.
     
  4. Mar 1, 2012 at 11:43 AM
    #4
    tacomaman06

    tacomaman06 Carolina Alliance: Enforcer

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    I always run premium......truck and car like it better,and its not that much more on a fill up. Mileage is good with it as well.
     
  5. Mar 1, 2012 at 12:33 PM
    #5
    Yamaha Dave

    Yamaha Dave Well-Known Member

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    I run whatever is cheapest. I don't notice a difference between them.
     
  6. Mar 1, 2012 at 2:04 PM
    #6
    Wild Card

    Wild Card Truck yeah!

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  7. Mar 1, 2012 at 2:09 PM
    #7
    medic2230

    medic2230 Ditch Doctor

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    I run 87. Truck only has 3200 miles on it but it's getting there. 18.2 last fill up.
     
  8. Mar 1, 2012 at 2:20 PM
    #8
    Graham

    Graham Pay it Forward

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    I run 87
     
  9. Mar 1, 2012 at 2:24 PM
    #9
    BVCOTaco

    BVCOTaco Well-Known Member

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    I run 85, except this last tank I ran 87 because I grabbed the wrong pump!
     
  10. Mar 1, 2012 at 6:04 PM
    #10
    RAT PRODUCTS

    RAT PRODUCTS RAT Products

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    I run the cheapest possible which is normally 87 I think. I get like 350-400 miles per tank.
     
  11. Mar 1, 2012 at 6:47 PM
    #11
    Madjik_Man

    Madjik_Man The Rembrandt of Rattle Can

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  12. Mar 1, 2012 at 8:55 PM
    #12
    Rich91710

    Rich91710 Well-Known Member

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    If the engine doesn't require 91, then running 91 is not going to benefit.

    Ethanol has a raw octane rating of around 118... but it's BTU content (actual power) is only around 75% that of gasoline (meaning worse fuel economy).

    But ethanol is cheap... and it is often used as an octane booster.
    Today's 91 is not the same as the "premium" of 35 years ago.

    IF... and only if... your engine is on the edge of pinging on 87 (or 85), then running 89/91 might improve mileage slightly because under load, the computer will be able to maintain more spark advance.
     
  13. Mar 1, 2012 at 9:00 PM
    #13
    Snowman

    Snowman I have a problem for your solution…

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    Manual says 87 for the truck, so thats what I run.
    Bike is high compression so it gets 91+ like the manual says.
     
  14. Mar 1, 2012 at 9:03 PM
    #14
    rbeezy

    rbeezy Well-Known Member

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  15. Mar 1, 2012 at 9:11 PM
    #15
    Darth_Yota

    Darth_Yota I intend to live forever, or die trying.

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    I don't always fill up my tank,






    But when I do, I prefer gas.



    I haven't noticed any difference in fuel economy from one to the other. So 87 is what I normally run. 91 at shell with the nitrogen fuel boost rocket powder additive. (not sure that's the technical term)
     
  16. Mar 1, 2012 at 9:11 PM
    #16
    4x4jeep

    4x4jeep Well-Known Member

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  17. Mar 1, 2012 at 9:12 PM
    #17
    Taqoma

    Taqoma Well-Known Member

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    I use premium now cause really it's only about $4 more each time u fill up
     
  18. Mar 1, 2012 at 10:08 PM
    #18
    Afraz

    Afraz Well-Known Member

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    I use regular 87, but every 5 or so fill ups put in SHell V Power. I find with the higher octane i get better mileage overall, but not a significant improvement in performance.
     
  19. Mar 5, 2012 at 5:29 PM
    #19
    t3hWIT

    t3hWIT Well-Known Member

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    My 3.4 ticks, so I run 89 to cut down on it. Premium if I'm hauling in a hilly area.
     
  20. Mar 7, 2012 at 5:19 AM
    #20
    Air_Ops

    Air_Ops Active Member

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    Switched to premium, previously used mid-grade 89 from new in 2001. Truck would do a double down shift on the steep grades. After switching to the premium the truck downshifts a lot less and even wants to up shift on the hills, proof enough for me that it makes a difference. Fuel mileage wise not a big difference but drivability improvement was huge. The 3.4 has 9.6:1 compression, with regular (87) or mid-grade (89) the knock sensors will cause the computer to dial back the performance back to compensate for the lower grade fuel. Toyota is not going to tell you that the truck needs a higher grade because it may effect your purchase decision. Made the switch after I got the truck back from the frame recall, and I had a set of TRD headers and an Airrad intake tube installed. The truck now drives like I always thought it should.
     
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