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MPGs Gone down since switch to syn oil

Discussion in '2nd Gen. Tacomas' started by Taco Town, Oct 19, 2012.

  1. Oct 19, 2012 at 4:25 PM
    #1
    Taco Town

    Taco Town [OP] Member

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    Rafael
    Fort Worth,TX
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    K&N Cold Air Intake, Derped lower valance, New BFG Rubbers
    I have had my Taco for around 9k miles and when it was timed to change the oil I switched to Mobil 1. Ever since then my average MPGs went from 18.5 to 17:eek:, I keep track of all my fill ups. Has this happened to anyone and what have you done??? When I owned my previous car, 05 scion xb, I used restore Oil additive every oil change and noticed a bit of a difference in mpgs. Any thoughts, suggestions and comments are greatly appreciated!
     
  2. Oct 19, 2012 at 4:25 PM
    #2
    DriverSound

    DriverSound Señor Member

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    Are you sure it's not winter blend gas or just stepping on the pedal heavier?
     
  3. Oct 19, 2012 at 4:27 PM
    #3
    david2011sr5

    david2011sr5 Well-Known Member

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    Did you switch to a different weight?
     
  4. Oct 19, 2012 at 4:44 PM
    #4
    badger

    badger Well-Known Member

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    coincidence does not impute causality
     
  5. Oct 19, 2012 at 5:24 PM
    #5
    Chitoson

    Chitoson Well-Known Member

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    There are so many variables involved it would be impossible to help with the information you have given.

    A strong wind, hills, or number of passengers, bla, bla, bla, could probably give you a 1.5 mpg difference, good luck tracking that.

    Keep an eye on overall fuel consumption trends and see if you have an issue over time.

    If you have the discipline, keep a detailed driving log (towing, hauling, passengers, weather, topography, speed, temp, season, city, highway, fuel brand...) and maybe you can identify an issue that will cost you 1.5 mpg.

    I keep a very un-detailed spreadsheet of every fill up and have see a varation in fuel consumption of 4.4 mpg and it does not really concern me. I am averaging 20.4 mpg over every fill up since I bought the truck and that works for me.
     
  6. Oct 19, 2012 at 5:36 PM
    #6
    Steves104x4

    Steves104x4 Well-Known Member

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    BUCKLE UP! It makes it harder for Aliens to pull you out of your Truck.
    Switching out the rear diff flluid to synthetic makes a HUGE improvement. [​IMG]
     
  7. Oct 19, 2012 at 6:04 PM
    #7
    jtgroce

    jtgroce Got R Did

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    It's probably winter blend gas that's causing it
     
  8. Oct 19, 2012 at 6:11 PM
    #8
    1stacoma

    1stacoma Well-Known Member

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    I just did my first oil change and I have kept track of every fill up. I changed my oil at 5K and I noticed a 1 mile increase since I put Mobil 1 in.
     
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