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5w20 in a 4.0 v6, should I dump it?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Blaise22, Dec 21, 2010.

  1. Dec 21, 2010 at 3:41 PM
    #1
    Blaise22

    Blaise22 [OP] Well-Known Member

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    Last night while I was changing my oil, after I had dumped my old oil already I realized I had gotten 5w20 instead of 5w30 for my 4.0 v6. Will I be fine running this for about 4k or should I switch it out now?
     
  2. Dec 21, 2010 at 3:44 PM
    #2
    1badhd

    1badhd Master Technician

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    I'd dump it and put 5W30 back in.Unless you're running in cold weather all the time.
     
  3. Dec 21, 2010 at 3:45 PM
    #3
    AndrewFalk

    AndrewFalk Science!

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    :)
    Won't hurt anything.
     
  4. Dec 21, 2010 at 3:50 PM
    #4
    ImthePrez

    ImthePrez Well-Known Member

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    I agree..it wont hurt
     
  5. Dec 21, 2010 at 3:55 PM
    #5
    jandrews

    jandrews Carolina Alliance Southwest Region Ambassador

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    Shit, sell the truck.
     
  6. Dec 21, 2010 at 4:02 PM
    #6
    Blaise22

    Blaise22 [OP] Well-Known Member

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    ^ I was scared I was going to have to before I read these post, glad I dont have to now:turtleride:
    seriously though I knew it wouldnt destroy it I was just wondering if it was best to switch it out, I always want the best for my baby.
     
  7. Dec 21, 2010 at 4:23 PM
    #7
    jandrews

    jandrews Carolina Alliance Southwest Region Ambassador

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    Your baby won't even know the difference, especially this time of year.
     
  8. Dec 21, 2010 at 4:28 PM
    #8
    Blaise22

    Blaise22 [OP] Well-Known Member

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    haha ok good, thank you
     
  9. Dec 21, 2010 at 4:36 PM
    #9
    rbeezy

    rbeezy Well-Known Member

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    ya dont waste your time and money on changing out the oil again, as long as there's oil in it then different viscosity wont hurt. but you do want to try make sure you do put the right viscosity according to manufacturers spec for next time
     
  10. Dec 21, 2010 at 4:38 PM
    #10
    crf69

    crf69 scraping my emblems off my plasti-dip

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    ummm yeah
    0-30.....better
     
  11. Dec 21, 2010 at 5:10 PM
    #11
    loeborg

    loeborg Active Member

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    Leave it, nothing will happen
     
  12. Dec 21, 2010 at 5:44 PM
    #12
    JKD

    JKD Well-Known Member

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    I might be concerned if I were going to load the truck down and tow with it. Otherwise, no, not something I'd worry about.
     
  13. Dec 21, 2010 at 10:23 PM
    #13
    all.on.black

    all.on.black Well-Known Member

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    I'm just curious... What's your reasoning behind this?
     
  14. Dec 22, 2010 at 5:56 AM
    #14
    buddywh1

    buddywh1 Well-Known Member

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    If you're working the engine really hard such that temp goes higher than normal for extended periods the oil can thin out more than usual. That's most likely to happen pulling loads in summer over mountains. 5w30 or even 40 provides margin for that long pull up a 6% grade with 5000 lb of box trailer in back.

    5W20 SM and especially SN oils are super stable, though, so occasional or short pulls won't be a problem.
     
  15. Dec 22, 2010 at 6:13 AM
    #15
    Jimmyjohn

    Jimmyjohn Well-Known Member

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    I use 5w20 Moble one and it is great
     
  16. Dec 22, 2010 at 6:50 AM
    #16
    Wattapunk

    Wattapunk Stay lifted my friends !

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    Wouldn't worry about it, especially if you used synthetic.
     
  17. Dec 22, 2010 at 7:48 AM
    #17
    AndrewFalk

    AndrewFalk Science!

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    :)
    Won't make a difference, unless you are seriously abusing the truck.
     
  18. Dec 22, 2010 at 7:58 AM
    #18
    JKD

    JKD Well-Known Member

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    Buddywh1 pretty much covered it. Lower viscosity oil is less able to protect against wear, especially in splash-lubricated areas like piston ring/cylinder wall and some valvetrain components of some engines. Add in high heat loads from heavy duty use, and the thin oil gets even thinner. I'd rather have approved viscosity oil for an engine under heavy duty use.
     
  19. Dec 22, 2010 at 9:03 AM
    #19
    buddywh1

    buddywh1 Well-Known Member

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    Just to make sure I'm clear... 5w20 is fully approved :thumbsup: and doubtless would work OK even then. I just agree that pushing it really hard the extra margin is nice to have.

    But when the vacation hauling a 20ft travel trailer across the southwest is over I'm going back to 5w20 to get whatever mpg improvement it will give me. However small it may be: it all adds up!
     
  20. Dec 22, 2010 at 9:09 AM
    #20
    OH-MAN

    OH-MAN Well-Known Member

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    I run 0-20 syn.
    You will be fine.
     
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