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Questions: Fuel Used 87 VS 89 oct -AND- MPG

Discussion in '2nd Gen. Tacomas (2005-2015)' started by 79cruiserfj40, Jan 1, 2007.

  1. Jan 1, 2007 at 12:32 PM
    #1
    79cruiserfj40

    79cruiserfj40 [OP] Active Member

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    Arkansas
    Vehicle:
    07 Tacoma Double Cab TRD Sport 4x4
    I have been using 89 octane fuel in my '05 Double Cab TRD 4wd because the man that I bought it from always used 89 octane. I have a little over 61k on the truck and was wondering if it would hurt anything to switch from the 89 octane to 87 octane?

    Also, I have kept up with my fuel consumption religiously and have been getting about 18.251 MPG over the past 10k miles. I do 80% of my driving on the interstate at ~75 mph. What gas mileage have you all been getting?

    THANKS in Advance!

    Matt
    2005 Toyota Tacoma Double Cab TRD Sport 4wd
    1999 Lexus LX 470
    1979 Toyota Land Cruiser FJ-40
     
  2. Jan 1, 2007 at 12:51 PM
    #2
    ForeRunner

    ForeRunner Scotch before noon. Moderator

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    Drunken Sailor
    Somewhere between Maine and Florida
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    I've always run the higher end stuff in my rig. Check page 250 in the owners manual.

     
  3. Jan 1, 2007 at 12:55 PM
    #3
    79cruiserfj40

    79cruiserfj40 [OP] Active Member

    Joined:
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    Male
    Arkansas
    Vehicle:
    07 Tacoma Double Cab TRD Sport 4x4
    Would it hurt the engine to try the 91 or 93 octane for a few tanks for observation and then go back to 89 octane if not pleased? If it wouldn't hurt, I may try making the change for a thousand miles or so and see if I get better gas mileage and performance.

    Matt
    2005 Toyota Tacoma Double Cab TRD Sport 4wd
    1999 Lexus LX 470
    1979 Toyota Land Cruiser FJ-40
     
  4. Nov 26, 2012 at 9:35 PM
    #4
    buckwild

    buckwild Active Member

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    Bill
    Frankfort, KY
    Vehicle:
    '12 d/c sport, tow pkg
    X-tang hard top bed cover, Aries black tube steps, Aries hood & window gaurds
    I use 87 octane & Lucas gas treatment in my V-6...E/G runs quiet, smooth & constantly gets 20 mpg. When we test E/Gs here @ Toyota, we use 87 for audits & 93 for durabilities.
     
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