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Dipstick Inaccuracy?

Discussion in '4 Cylinder' started by themeat424, Oct 12, 2012.

  1. Oct 12, 2012 at 2:46 PM
    #1
    themeat424

    themeat424 [OP] Active Member

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    I changed my oil today, and after reading threads on here about how much oil to replace, I decided to first put in 5.5 quarts. I let the truck sit on level ground for about 40 minutes and then checked the dipstick. It's reading well above the full mark. I checked several times and kept getting the same reading. If I looked harder maybe I saw the oil looking a little "thicker" half way between the low and full markings, but I might just be looking for something. So now I'm wondering what to rely on. Do we just go with the 6 quarts the manual says to add and negate the dipstick? I understand some oil is still sitting in the motor, but exactly how much is that? Kinda confusing...
     
  2. Oct 12, 2012 at 2:53 PM
    #2
    sprocketdog

    sprocketdog Well-Known Member

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    Did you start the truck up after the change to cycle the oil in the filter and passages?
     
  3. Oct 12, 2012 at 2:58 PM
    #3
    TacoDell

    TacoDell Truck ~n~ Tow

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    dipstick should be fairly accurate...
    unless you have a dent in the oil pan.

    sample your oil level after you've started/shut down the motor
    thus allowing the old oil to mix with the new.

    btw... the oil level is acceptable...
    as long as it reads between the lower and upper fill lines.

    tho' most folk prefer to be nearer the upper fill line.
     
  4. Oct 12, 2012 at 3:00 PM
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    OffroadToy

    OffroadToy The dog did it...I swear!

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    My owners manual says 5.5 qts but that shows up above the full mark on the stick... 5.25 qts puts it spot on.
     
  5. Oct 12, 2012 at 3:02 PM
    #5
    monsterkx2fiddy

    monsterkx2fiddy Well-Known Member

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    Also depends on how long you let oil drain. Every drop adds up
     
  6. Oct 12, 2012 at 3:55 PM
    #6
    Rich91710

    Rich91710 Well-Known Member

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    Run the engine to circulate the oil.
    Shut down.
    Remove the dipstick and wipe.
    Wait 5 minutes.
    Insert and remove the dipstick.

    But it's a gauge... it's not a meter. As said, between the dots is fine, and from the top to bottom dot is about a quart difference.

    On an oil change, just use 5.5 and you're good.
     
  7. Oct 12, 2012 at 7:07 PM
    #7
    OffroadToy

    OffroadToy The dog did it...I swear!

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    I let it drain a good half hour...
     
  8. Oct 13, 2012 at 7:40 PM
    #8
    themeat424

    themeat424 [OP] Active Member

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    Yes I started the engine and let it idle for a little. I also drove around before I parked it to sit and then 40 minutes later I checked the dipstick. Unless the oil is being spread on the dipstick while pulling it out, it reads well above the top dot. And yes I do support the stick and hold it horizontally.
     
  9. Oct 13, 2012 at 8:10 PM
    #9
    TacoDell

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    some residual oil stays up on the head/valvetrain...
    so you will never be able to drain it completely.

    I'd suspect that you added too much using 5.5 qts

    have fun removing the excess :D

    * I put 5.75 qts in mine with an over sized filter ;)
     
  10. Oct 13, 2012 at 9:41 PM
    #10
    david2011sr5

    david2011sr5 Well-Known Member

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    I just changed mine 3 hours ago. Added 5.5 qts ran it for 5 min and checked. It read well above the second mark, so I let it sit for a bit re-checked it and was spot on. This may be obvious but wipe the dip stick clean and insert, than immediately pull dip stick. If you let the dipstick sit to long you may be allowing residual oil from the tube to get on dip stick.
     
  11. Oct 13, 2012 at 11:40 PM
    #11
    themeat424

    themeat424 [OP] Active Member

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    I actually installed a Fumoto oil drain valve, so removing some oil is actually nothing more than opening the valve for a couple seconds ;)
     
  12. Oct 14, 2012 at 12:00 AM
    #12
    Spoonman

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    Start the engine, let it run a few minutes. Shut it off, wait 3 minutes. Then check the engine oil. It's ok to have a little extra.
     
  13. Oct 14, 2012 at 12:28 AM
    #13
    Rich91710

    Rich91710 Well-Known Member

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    5.5 is fine.
    Gelo likes to put in 6 and he's overfilling it but he'll argue that point all day (as he did in a thread 6 months ago).
     
  14. Oct 15, 2012 at 5:50 AM
    #14
    LDurchy

    LDurchy Well-Known Member

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    I wonder, you made no mention of changing the filter. Did a new filter get bought, and still lies on your workbench still in the box? ( member of the OH NO! club )
     
  15. Oct 15, 2012 at 7:02 AM
    #15
    themeat424

    themeat424 [OP] Active Member

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    This is not my first time changing the oil on a car or truck ;) Yes the filter was changed with a purolator pureone, which looks to be the same size as the oem filter.
     
  16. Oct 15, 2012 at 8:36 AM
    #16
    DGXR

    DGXR Well-Known Member

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    That sounds about right... here's my experience (2006 2.7L):
    6 quarts (w/filter) puts me well above the full mark
    5.5 quarts (w/filter) reads just above the full mark
    5 quarts (w/filter) reads just below the full mark

    Been running it with 5qt and no problems, as expected, since the level is well between the marks. I might go with a little more oil (5.5) during the summer months when increased cooling capacity might help.
     
  17. Oct 15, 2012 at 4:12 PM
    #17
    themeat424

    themeat424 [OP] Active Member

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    Exactly, so now is the dipstick telling the true story on what the oil level should be? or do we just go with the manual that says 6 quarts? Basically, can we confirm that the 6 quarts mentioned in the manual is referring to a completely dry engine, and that when doing a full oil change with filter there is still approximately a half quart sitting in the motor?
     
  18. Oct 15, 2012 at 4:19 PM
    #18
    rhowell

    rhowell Well-Known Member

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    The dipstick in the cubicle beside me is not very accurate but that is my problem of the day.............
     
  19. Oct 15, 2012 at 6:33 PM
    #19
    SVHANC

    SVHANC Kermit

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    Try the PL20195 for an oversized PureOne filter.
     
  20. Oct 15, 2012 at 7:07 PM
    #20
    OffroadToy

    OffroadToy The dog did it...I swear!

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    I go by the reading on the dip stick.

    The Chilton's manual says the same thing as my owners manual for engine/gear oil capacities except they mention...
    * All capacities approximate. Add as necessary to bring to appropriate level.
     
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