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Old 03-10-2015, 01:35 PM
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Engine oil level above the MAX

My car has 5000 miles on it. Initially (car has only 200 miles) I noticed that the coolant level was below the MIN mark (cold engine). The dealership topped it off. After 4000 miles I noticed again that coolant level was dropped again below MIN mark (cold engine). I took the car to the dealership again, they did pressure test and did not find anything abnormal. They topped it off again. I am wondering where so the coolant leaked to. Now today I was checking the engine oil, I noticed that it is above the MAX, I can swear that it on on MAX a couple of weeks ago. Now I am wondering where did the extra oil came from. Other than that the car running smoothy with no other issues.

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Old 03-10-2015, 06:08 PM
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Re: Engine oil level above the MAX

Quote:
Originally Posted by Olivia_2015 View Post
My car has 5000 miles on it. Initially (car has only 200 miles) I noticed that the coolant level was below the MIN mark (cold engine). The dealership topped it off. After 4000 miles I noticed again that coolant level was dropped again below MIN mark (cold engine). I took the car to the dealership again, they did pressure test and did not find anything abnormal. They topped it off again. I am wondering where so the coolant leaked to. Now today I was checking the engine oil, I noticed that it is above the MAX, I can swear that it on on MAX a couple of weeks ago. Now I am wondering where did the extra oil came from. Other than that the car running smoothy with no other issues.
Two things going on:
  1. It's common with new cars that they don't "burp" the coolant system and some air voids fill with coolant as the engine runs longer, making it appear that you have less coolant. It will likely stabilize after a couple thousand miles.
  2. Oil expands when warm, increasing the apparent fill level. Try checking it cold, bearing in mind outside temperatures can affect it a little, too.
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Old 03-10-2015, 07:02 PM
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Re: Engine oil level above the MAX

It is possible for your oil level to be slightly
higher than a previous check. This would be due to diesel
fuel that may temporarily be in the crankcase due to
operation of the diesel particulate filter regeneration
strategy. This fuel will evaporate out under normal
operation.
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Old 03-10-2015, 08:08 PM
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Re: Engine oil level above the MAX

We were planning to drain the overfilled oil, what I am hearing that this could be normal. Thanks
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Old 03-10-2015, 08:12 PM
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Re: Engine oil level above the MAX

Yep, its normal, and it is also very easy to get a bad reading due to the way the stick can drag oil up the pipe.
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Old 03-10-2015, 08:31 PM
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Re: Engine oil level above the MAX

Our Jeeps have one of the nicest dipsticks available on cars today. I hate those ones that feel like they are going to kink and break of in the tube when inserted.
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Old 03-10-2015, 08:32 PM
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Re: Engine oil level above the MAX

Quote:
Originally Posted by Benn0 View Post
Yep, its normal, and it is also very easy to get a bad reading due to the way the stick can drag oil up the pipe.
I was going to say this. They did a horrible job with the dipstick placement. I have to let it sit a solid 15-20 minutes to get a good reading, otherwise it will look way overfilled every time.
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Old 03-10-2015, 10:00 PM
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Re: Engine oil level above the MAX

Olivia,

The correct way to check your oil level at the dipstick is to leave it overnight, remove the dipstick, clean it off, insert fully into the tube then remove again and check the level.

This should give you an accurate reading. Of course, this is provided your JGC is parked on level ground !
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Old 03-10-2015, 11:07 PM
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Re: Engine oil level above the MAX

That method doesn't work for me, I kept getting over MAX readings as pulling it out would drag oil up the tube, then when you reinsert after being wiped it was collecting oil off the side of the tube and showing at being over the MAX level.

As someone posted in the Diesel dipstick reading thread:
And that would work well if the 3.0l JGC arrangement didn't drag oil up the dipstick tube to foul the reading when re-inserting the dipstick.

For consistant readings, do as described previously in this thread; lift the dipstick only 20mm to crack the seal and release the air lock, reinsert then withdraw fully to read.

That method works for me.
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Old 03-10-2015, 11:19 PM
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Re: Engine oil level above the MAX

Quote:
Originally Posted by Benn0 View Post
That method doesn't work for me, I kept getting over MAX readings as pulling it out would drag oil up the tube, then when you reinsert after being wiped it was collecting oil off the side of the tube and showing at being over the MAX level.

As someone posted in the Diesel dipstick reading thread:
And that would work well if the 3.0l JGC arrangement didn't drag oil up the dipstick tube to foul the reading when re-inserting the dipstick.

For consistant readings, do as described previously in this thread; lift the dipstick only 20mm to crack the seal and release the air lock, reinsert then withdraw fully to read.

That method works for me.
And me!
I was getting inconsistent readings till I read that, and now get the consistency one would expect!

Cya
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Old 03-12-2015, 07:42 PM
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Re: Engine oil level above the MAX

Hmm, not sure about that method of reading the dipstick. Generally you want a HOT engine which has sat 1/2 hour or so to make sure all the oil dripped into the pan. Pull out the dipstick (slowly), wipe off, insert slowly until it bottoms out, and then pull it out again (slowly). There might be a bit of "splash" here and there, but you can clearly see the oil level and check it against the markings.
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Old 03-12-2015, 07:59 PM
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Re: Engine oil level above the MAX

Quote:
Originally Posted by hayasa View Post
Hmm, not sure about that method of reading the dipstick. Generally you want a HOT engine which has sat 1/2 hour or so to make sure all the oil dripped into the pan. Pull out the dipstick (slowly), wipe off, insert slowly until it bottoms out, and then pull it out again (slowly). There might be a bit of "splash" here and there, but you can clearly see the oil level and check it against the markings.
Have you tried that on the diesel? In my MY14 if I do that the oil gets dragged up the tube on the first pull out, then after wiping the stick and putting back in the tube, the oil that was pulled up the tube gets picked up and gathers around the thick part of the stick and then drips down onto the markings. It looks like the level is 2 inches over MAX.

But do the other method that avoids collecting the oil dragged up the tube and I get an accurate reading.

Unless there is something different about the dipstick on the US diesel compared to the export.
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