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What is the factory fill oil?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by JKD, Oct 11, 2009.

  1. Oct 11, 2009 at 11:10 PM
    #1
    JKD

    JKD [OP] Well-Known Member

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    I changed my oil about 1000 miles ago, and used Mobil regular (Drive Clean 5000) oil, 10w30* as the manual says.

    I've noticed a drop of about 1-2 mpg since then, and my driving conditions have not changed significantly. Looking at the graph of my mileage data it is pretty clear--it dropped immediately after the oil change, by about 1.2 mpg.

    Is the factory fill a 10w30 conventional oil? Or is it something else (partial synthetic, lighter weight, etc.)?

    *Edited to add: I had my viscosities mixed up. Manual calls for, and I put in, 5w30.
     
  2. Oct 12, 2009 at 12:09 AM
    #2
    RelentlessFab

    RelentlessFab Tacoma offroad armor fabricating beast Vendor

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    wow thats really strange. never heard of this happening before. I run Mob1 5-30 in my truck since the 1st change and its always been good in mine. Are you sure there wasnt some other change? Like maybe they changed to winter fuels in your area, or you got gas with 10% ethanol or something like that. :confused:
     
  3. Oct 12, 2009 at 12:17 AM
    #3
    BakoTruck

    BakoTruck Well-Known Member

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    I may be wrong on this but I think I remember someone saying they use Mobil one 10w30 out of the factory.

    As far as the MPG's, you also have to take into account of different fuel mixes for different times of the year, but you could be right that it could be the oil. But basically what I'm trying to say is that there are many different aspects that could effect that.

    I would suggest for your next oil change is to go with Mobil 1, most people on here use that oil.
     
  4. Oct 12, 2009 at 12:58 AM
    #4
    JKD

    JKD [OP] Well-Known Member

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    Tire inflation is fine. My standard practice on new vehicles is to use conventional oils until 5000 miles have passed, and then switch to synthetic on the next oil change. I usually use Mobil 1, but I couldn't pass up a deal on the Pennzoil Platinum synthetic when Wal-Mart was selling it for $20 with a $15 rebate...so the first two synthetic changes on this one will be with Pennzoil.

    My owner's manual and oil fill cap both say 10w30 across all temp ranges. I was surprised it wasn't 5w30 or 5w20.

    ETA: I'll find out soon enough. I changed the oil at 3700 miles, and I am going to split the difference between then and 10,000 miles to get me back on the normal maintenance schedule. So, I will be changing it at 6800 miles, and again at 10,000. I'll use Pennzoil Platinum both times.
     
  5. Oct 12, 2009 at 4:43 AM
    #5
    SManZ

    SManZ el tráfico más lento se queda derecha

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    Weird, mine is an '09 V6 and calls for 5-30. I did the oil change about 800 miles ago and notice no change in MPG.
     
  6. Oct 12, 2009 at 3:05 PM
    #6
    JKD

    JKD [OP] Well-Known Member

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    Never mind, I had it backwards--I originally thought it would take 10w30, but the manual specifically calls for 5w30 across the whole temp range. I put in 5w30 Mobil Drive Clean 5000 oil.

    Anyway, it sounds like maybe Toyota uses a better oil for the initial fill. I have a bottle to send for an analysis--maybe they can tell me!
     
  7. Nov 12, 2009 at 10:50 PM
    #7
    GTVAPSAMTIK

    GTVAPSAMTIK Well-Known Member

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    If you find out which oil TOYOTA use out of factory, would you post it here.
     
  8. Nov 13, 2009 at 1:55 AM
    #8
    JKD

    JKD [OP] Well-Known Member

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    Yeah, I have my sample bottle sitting here waiting for me to send it in. I'll post whatever results I get.
     
  9. Nov 13, 2009 at 5:48 AM
    #9
    PacoTheTacoMan

    PacoTheTacoMan Well-Known Member

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    Weathertechs, personally fabricated tailgate lock, tint, extra D rings, Exactfit seatcovers, re-enforcing the tailgate and adding a leaf next week.
    My truck calls for 0w20 or 5w20. Dealer told me to use 5w30, but I go by the fill cap. Always have.
     
  10. Nov 13, 2009 at 5:53 AM
    #10
    98tacoma27

    98tacoma27 :POOPCORN: Staff Member

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  11. Nov 13, 2009 at 6:04 AM
    #11
    oldtimertoyota

    oldtimertoyota Well-Known Member

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