Initial oil change—TWELVE quarts!

Was your 392 smoking and exhibiting similar conditions as noted in the post you attached?
 
It’s a good habit to get into, this way, at a minimum, you can monitor if it’s short of your last fill; your vehicle could be burning oil (or has an unknown leak).
Mine only burned about two tablespoons during the first 1500 miles. Now no drop on dipstick all seems to be tight. This includes off roading steep trails 😀
 
It’s a good habit to get into, this way, at a minimum, you can monitor if it’s short of your last fill; your vehicle could be burning oil (or has an unknown leak).
When I remember I check the dipstick before draining.
 
Was your 392 smoking and exhibiting similar conditions as noted in the post you attached?
As mentioned in that thread: I noticed a very small amount of smoke twice during startup over the two month ownership period since acquired new at dealer. Minor enough I wouldn’t have even mentioned it had I not noticed the thread started by another member.
 
When I remember I check the dipstick before draining.
Exactly - The dipstick “should” indicate if the oil is low, full or overfilled above the hatches if “PROPERLY” checked….
ROUGHLY 5 +/- quarts overfilled should definitely show in some capacity that it’s above the proper fill lines on the dipstick…as well as oil PSI fluctuations on the gauges….This is alarming to me that there “seems” to me no indication in the scenario that was started in this post.
 
Exactly - The dipstick “should” indicate if the oil is low, full or overfilled above the hatches if “PROPERLY” checked….
ROUGHLY 5 +/- quarts overfilled should definitely show in some capacity that it’s above the proper fill lines on the dipstick…as well as oil PSI fluctuations on the gauges….This is alarming to me that there “seems” to me no indication in the scenario that was started in this post.
Yep.
And when checking a new vehicle, you’d look to see if it’s “full”. Which I, and most others do.
I don’t think mentally anyone is considering evaluating/analyzing over “full”.
It looked new (gold color), and “full”. I didn’t over-analyze it.
 
What oil are you guys running that are doing your own oil changes?

I've just received my 2024 392 so no oil change yet, and I don't know about other Model Years, but the MY2024 Owners Manual specifically recommends to use SAE 0W-40 meeting MS-A0921:

1707854846744.webp


Not all of them say MS-A0921 on the back label. Here's one that I found:

OW-40 spec'd for MS-A0921 - 1.webp


OW-40 spec'd for MS-A0921 - 2.webp


FWIW.
 
Just curious as to what it was reading on the actual dipstick “BEFORE” you changed the oil as this sounds insane and really bad for the vehicle at ANY mileage - Also extremely curious as to your “OIL PSI” readings before the oil change during your break in mileage with this much oil in the engine 😐
My guess is it would just look full that oil was probably very clean and transparent hard to see on dipstick. Easier to see when oil is getting dirty or a little bit darker.
 
Yep.
And when checking a new vehicle, you’d look to see if it’s “full”. Which I, and most others do.
I don’t think mentally anyone is considering evaluating/analyzing over “full”.
It looked new (gold color), and “full”. I didn’t over-analyze it.
By chance did you get any test results back yet?
 
Exactly.

What’s crazy is 95% of oil changes likely aren’t measuring out what was drained.
(E.g. I have a feeling this was a similar situation: https://www.jeep392.com/threads/occasional-smoke-new-2024.3324/
)

As I mentioned, many simply take to dealer to utilize their free wave program, or a quick lube, where they simply drain the oil, and add the recommended 7.5 quarts. All unaware of a factory overfill issue. (And some running up to 5k miles on initial factory fill)

If you drain, and fill to 7.5.. aren't you all set?
 

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