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quart low each oil change

Discussion in 'Technical Chat' started by stratton, Jul 14, 2010.

  1. Jul 14, 2010 at 7:59 AM
    #1
    stratton

    stratton [OP] Well-Known Member

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    I have noticed that my 07 Tacoma is about a quart low each time i change it. The last oil change i did go over on mileage, 6000 and not the recommended 5000. I have 32,000 miles on the truck so far. I am hoping that its just the oil breaking down and slipping by. I have not noticed any leaks or smoke problems. I dropped it off at the shop this morning. My warranty runs out in a few days. Any thoughts on this?????
     
  2. Jul 14, 2010 at 8:03 AM
    #2
    Janster

    Janster Old & Forgetful

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    The dipsticks on these trucks absolutely suck.... Are you sure you're getting an accurate reading on the dipstick?
     
  3. Jul 14, 2010 at 8:05 AM
    #3
    stratton

    stratton [OP] Well-Known Member

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    Not positive. I brought it to walmart the last time. That could be the problem......
     
  4. Jul 14, 2010 at 8:06 AM
    #4
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Thor

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    Are you noticing this when you check the dip stick, or by measuring how much comes out of the pan?
     
  5. Jul 14, 2010 at 8:07 AM
    #5
    HondaGM

    HondaGM Roll Tide

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    i would rather blow my engine up as take it to walmart
     
  6. Jul 14, 2010 at 8:10 AM
    #6
    stratton

    stratton [OP] Well-Known Member

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    dipstick
     
  7. Jul 14, 2010 at 8:12 AM
    #7
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Thor

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    Keep in mind, the oil filter holds a bit of oil. ALso, 1 quart of oil being consumed by the engine is within specs, and considered "normal". I doubt, however, your engine is consuming that.
     
  8. Jul 14, 2010 at 8:18 AM
    #8
    Barnone

    Barnone Guest

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    Something is wrong with your truck or your analysis because a quart loss in 5-6k miles in a low mileage vehicle is bad.
     
  9. Jul 14, 2010 at 8:19 AM
    #9
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Thor

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    According to Toyota, as well as most manufactures, 1 quart in 5000 miles is acceptable, and considered "normal".
     
  10. Jul 14, 2010 at 8:20 AM
    #10
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Thor

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    FWIW, Mazda considers 1 quart in 2000 miles "normal".
     
  11. Jul 14, 2010 at 8:22 AM
    #11
    NAAC3TACO

    NAAC3TACO Well-Known Member

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    +1. The owners manual even states that some oil burn off is normal, but last year I drove the piss out of my truck for 4800 miles in a short period and didn't burn any oil. My daughter's former car, a 1994 Corolla, burned about 1/2 a quart in 3000 miles.
     
  12. Jul 14, 2010 at 9:16 AM
    #12
    Peru

    Peru Well-Known Member

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    Mine does the same -- look at the upside. You are refreshing the oil with new oil and more additives.

    But seriously. I had a Nissan patrol that burned over one liter/5000km and I got over 350k kms. Those were hard m
    Kms too.

    Every BMW bike I have ever owned burned oil of about 1 liter per 5000km and got over 100k on one of them. The compression on all were at the high end of the spec's -- in other words very good. BMW specifies 1 liter/1000miles but that is on a flat twin.

    The funny thing is my truck will not burn oil till it hits about 3k miles and then it will go through 1/2 liter

    Doesn't make since or maybe at that point the oil is gotten thin enough to get past the rings when using the engine to slow down going down hills
     
  13. Jul 14, 2010 at 9:59 AM
    #13
    stratton

    stratton [OP] Well-Known Member

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    there is a few hills on my way home that i tend to shift down a a gear or two. I thought i am helping my brakes out. never thought that i could be doing damage or making the oil slip by.




     
  14. Jul 14, 2010 at 10:01 AM
    #14
    Chachie

    Chachie Well-Known Member

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    I had a 2000 jetta that burned a quart every thousand miles.
     
  15. Jul 14, 2010 at 10:26 AM
    #15
    Janster

    Janster Old & Forgetful

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    Since you're not doing the oil changes.... I would recommend:

    Check the dipstick immediately after you have the oil changed. Make sure the truck has been sitting not-running (on level ground) for atleast 2 hours before checking the dipstick.

    Then - just prior to having the oil changed, check the level again (same as above).

    Checking after & then before...will give you an indication if you've lost any oil. If you are not checking the dipstick to VERIFY the garage's work (or in this case, Walmart)...then you truely don't know where you've started. Do you know they're putting in the exact (right) amount of oil every time?

    Time to start doing your own oil changes!! They're easy....and you can help elminate all the headaches because you'll know exactly how much you put in and where the dipstick level is (for the most part, the dipstick still suck in these trucks).
     
  16. Jul 14, 2010 at 10:30 AM
    #16
    Peru

    Peru Well-Known Member

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    its purely speculation on my part based on anecdotal evidence but a neg pressure builds in the cylinder and it draws a very small amount past the rings.

    Its perfectly normal with some vehicles and not a need to worry. You will still get same amount of miles out of the engine
     
  17. Jul 14, 2010 at 10:36 AM
    #17
    stratton

    stratton [OP] Well-Known Member

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    The dealer just called and said that everything looked good. But they want to see it again in a 1000 miles just to be sure.
     
  18. Jul 14, 2010 at 10:42 AM
    #18
    ImpulseRed008

    ImpulseRed008 Gone But Not Forgotten

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    Good news.

    Like Janster said, change your own oil. It's not difficult - even easier with a fumoto valve. Then you KNOW you have the right amount of the RIGHT oil.

    and yes, these dipsticks do suck!!
     
  19. Jul 14, 2010 at 8:17 PM
    #19
    Barnone

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    I changed my oil today at 95k miles on my Taco. I use the recommended 5k miles interval. I checked it before I drained it and it was full to the mark.
    The manufacturers say one quart in 5k miles is acceptable to cover their ass for poor quality control.
     
  20. Jul 15, 2010 at 8:31 AM
    #20
    Peru

    Peru Well-Known Member

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    So you get 300k miles as opposed to 330k miles. Why worry the frame will turn to a pile of rust before then.

    Why worry -- any rate just so you know there is a guy on advrider.com who has a bike with over 300k that burned oil from the getgo and still has excellent compression. Well within spec. Think of it this way, oil will remain where it is most needed during start up. The only down side is that if you go 300k (hardly anyone keeps their truck that long) you will spend more on oil. If you use synthetic that could add up. I am to lazy to calculate but its probably a good amount.
     
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