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Old 11-09-2014, 11:08 AM
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Oil Consumption - 3.6l pentastar engine

Hello,

Is 5 oz of oil per 3750 miles OK for a new 3.6l Pentastar (40% highway, 60% city driving)...?

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Old 11-09-2014, 11:34 AM   #2
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It is not uncommon for new engines to have some oil consumption until the engine is broken in.

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Old 11-09-2014, 11:49 AM
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Thanks Pmryall,
yes, it's a brand new engine. I decided to go with the manual and to change the oil every 5000 miles, thus I still have original oil in it.
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Old 11-09-2014, 11:50 PM   #4
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Curious how you managed to figure that out?
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Old 11-10-2014, 12:14 AM   #5
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5 oz is what, like 1/6 of a liter or something? That's next to nothing over 5k miles.
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Old 11-10-2014, 09:16 AM   #6
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Curious how you managed to figure that out?
I was wondering the same thing.
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Old 11-10-2014, 10:05 AM   #7
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+1, how did you determine that amount of loss? I would think there would be at least 5oz still lurking in the engine/oil pan.

I wouldn't be worried at all.


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Old 11-10-2014, 12:06 PM   #8
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I wonder if he added 5 oz of oil to bring it up to the original mark on the dipstick. He mentioned 5 oz in 3,750 miles and that he was going to change it every 5,000 miles so I don't think he drained the factory oil yet.
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Old 11-10-2014, 12:16 PM   #9
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I wonder if he added 5 oz of oil to bring it up to the original mark on the dipstick. He mentioned 5 oz in 3,750 miles and that he was going to change it every 5,000 miles so I don't think he drained the factory oil yet.
That 5 ounces of oil could be anywhere in that motor. I sure wouldn't be concerned about it myself.
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Old 11-10-2014, 12:29 PM   #10
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Hello,

Is 5 oz of oil per 3750 miles OK for a new 3.6l Pentastar (40% highway, 60% city driving)...?
Mine doesn't burn any oil... when do you check your oil?

Check all that apply:

A. In the morning before I start the motor.

B. At the gas station when I stop to fill the tank.

C. Randomly, whenever my OCD kicks in.

D. Answers A and B.

E. Answers A, B and C.

F. Answers A, B, C and D.

G. Answers A, B, C, D and E.

H. Answers A, B, C, D, E and F.



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Old 11-10-2014, 05:39 PM   #11
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My 2013 3.6, also doesn't burn any oil. It's, always on the top of the hash marks.

Chrysler/Jeep, recommends, that you warm up your engine oil, to normal operating temperature.
Park it on level ground.
Turn the engine off, and wait 5 minutes, and then check your oil level!!!!!!!!

The above, is for accuracy!!!!!!!
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Old 11-10-2014, 08:42 PM
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Like I've previously mentioned, it's a brand new engine. The oil level was at MAX at 0 miles, I've just added 5oz (+/-150 ml) to bring the oil level back to MAX at 3750 miles (+/-6000 km).
I usually check the oil at gas station after I gas up, therefore there should be enough time for the oil to drain back down to the oil pan.
Thanks for your replies guys.
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Old 11-10-2014, 11:47 PM   #13
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I don't know how much 150ml is.. if that's measurable on the dipstick, how much?

My Hemi 6.1L would lose more oil through the PCV and pump it into the intake.

I wouldn't be concerned.. what oil did you top it with?

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Old 11-11-2014, 12:13 AM   #14
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Isn't 5 ounces just over an 1/8th of a quart? I would think that little of an amount would be hard to detect on the dip stick.
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Old 11-11-2014, 12:32 AM   #15
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Someone touched on it earlier, the PCV system alone is probably responsible for 80% of oil consumption in a healthy engine. I wouldn't worry until you started using more than a quart over the oil change span (say 6 - 7k).
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Old 11-11-2014, 04:38 AM   #16
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^^^The 3.6, doesn't have a PCV system!!!!!!!!!
It works off of a centrifuge system.

Did you break in the engine, per the Owners manual?
The 3.6, unlike the 3.8 engine, is normally, a very dry engine.
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Old 11-11-2014, 06:59 AM
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I don't know how much 150ml is.. if that's measurable on the dipstick, how much?

My Hemi 6.1L would lose more oil through the PCV and pump it into the intake.

I wouldn't be concerned.. what oil did you top it with?

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Old 11-11-2014, 07:01 AM
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^^^The 3.6, doesn't have a PCV system!!!!!!!!!
It works off of a centrifuge system.

Did you break in the engine, per the Owners manual?
The 3.6, unlike the 3.8 engine, is normally, a very dry engine.
I have yet to read that part of the manual... Is there anything specific about breaking into the engine?
I just drove it like I normally would...
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Old 11-11-2014, 07:18 AM   #19
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A quart of oil is 32 ounces ....... so 5 ounces is just a bit more than an eighth of a quart ......... personally I wouldn't have topped it off nor would I be worried about it.


p.s. don't stop by the dealer with this concern ....... you will get a reputation with them that you don't want.
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Old 11-11-2014, 09:32 AM   #20
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Quote:
Originally Posted by ekhalkov View Post
I have yet to read that part of the manual... Is there anything specific about breaking into the engine?
I just drove it like I normally would...
Page 20 in the Users guide, explains the proper Break in Procedures. Mine is a 2013 Users Guide, so the page number may vary by year.
Just look in your index!

The amount of oil, that your's is using is so minimal, that I wouldn't worry about it.
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Old 11-11-2014, 02:14 PM
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Thanks Old Dogger
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Old 11-11-2014, 03:28 PM   #22
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^^^The 3.6, doesn't have a PCV system!!!!!!!!!
It most definitely does have a PCV system:



There's two plastic hoses coming from the top-middle of that picture, along the passenger side of the intake manifold.

One curves off to the right and hooks into the intake manifold. Crankcase air/vapors get sucked into the intake through this hose.

The other squiggles off to the left and hooks up to the air filter box. Fresh air flows through this hose to replace the air that was sucked out of the crankcase.

Ignore the absence of the air filter box in this photo
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Old 11-11-2014, 04:07 PM   #23
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^^^Please read the below Link.

We Build a Pentastar V-6 to Learn More About Chrysler’s New Engine | Car and Driver Blog

^^^Click on this, and the then topic, what's new.
And yes, it is a PVC, but it's also a centrifuge, which is different!!!!!!!!
But you are correct, because they still call it a PCV!

And thanks once again, for all of the pictures, referencing the dry intake manifold!!!!!!
The Dealer did change out my oil pressure switch!
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Old 11-11-2014, 04:44 PM   #24
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The centrifuge is irrelevant to this discussion. That is just a different method of oil separation to limit the amount of oil vapors that making it out of the crankcase. Other PCV systems use other methods of oil separation. Either way, some oil vapors still make it out of the crankcase and into the intake manifold through the PCV hose.
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Old 11-13-2014, 02:47 PM
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Page 20 in the Users guide, explains the proper Break in Procedures. Mine is a 2013 Users Guide, so the page number may vary by year.
Just look in your index!

The amount of oil, that your's is using is so minimal, that I wouldn't worry about it.
OK..., I've followed the break-in procedure as per user manual... Is my engine considered broken-in now???
BTW, since I've added the oil to top it off I put on another 800 miles and the oil level is still at MAX...
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Old 11-13-2014, 03:39 PM   #26
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Issue resolved. Do you want to close the thread now?

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Old 11-13-2014, 03:47 PM
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Probably yes...
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Old 11-14-2014, 06:57 AM
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How do I close the thread?

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