Burns oil

Tiny
ARTHURWE515
  • MEMBER
  • 2005 JEEP GRAND CHEROKEE
  • V6
  • 4WD
  • AUTOMATIC
  • 190,000 MILES
It seems to burn oil but not all of it. When it gets so low on the dipstick it stops using oil. I cleaned the PCV valve and added oil but that didn't fix it. Visual inspection shows no leaks. Any thoughts?
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Friday, July 31st, 2020 AT 9:42 AM

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Tiny
KASEKENNY1
  • EXPERT
Do you have blue smoke? Try to take notice on when it smokes and when it does not.

Then we need to do an oil consumption test. You do this by performing an oil change and putting the proper amount of oil in the engine. Then mark the dipstick at the level the oil comes up to. Then drive 1,000 miles and check the dipstick. Clearly we need to check it a couple times in between this just to make sure it does not run empty in case you are using a lot of oil. After a 1,000 miles, check the oil and fill it back up to the marked line and track how much oil you put in it. For example, if it took 2 quarts of oil to fill it back to the line then you are using 2 quarts in 1,000 miles.

Let's do this and then post how much oil you are actually using. Once we know how much oil you are using we can get a better idea as to what the issue could be.

As for it stopping the consumption of oil once it gets low, is most likely just a perception issue because oil level will not effect the issue unless it just doesn't have any more oil to burn. But if there is still oil in the engine then it will continue to burn it until it is gone.

Let me know if you have questions. Thanks
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Friday, July 31st, 2020 AT 10:42 AM

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