6 Quarts engine oil!

[TheBirdie72]

My dealership has been good with the whole oil change using only five quarts thing. But if they weren’t, I’d just man up, pull out the dip stick, get a really long plastic straw, and suck out the extra quart myself.

Sponsored

 

[wibornz]

I don't let others change the oil on my Jeep. I change my oil often in Walmart parking lots while we travel. Super easy to do and can take the old oil right back into Walmart for disposal.

One time changing my oil in an O'Riely's parking lot in New Mexico, I pulled the oil plug and a big gust of wind turned the raining oil into a mist blowing it all over me and the parking lot. It looked like an environmental disaster. Ruined my clothes and oil everywhere. Went back into the store, bought oil dry and rags to clean up the mess. Had to throw my shirt away.

I can only imagine being out on a trip and some idiot strips out the drain plug or breaks the oil cooler and then it taking two weeks to get the Jeep fixed somewhere is BFE.

 

[zouch]

don't know why i'd "weep"; i've got no 392.
if this is true, it seems like more evidence that the 392 wasn't intended for the actual use i put mine through.

would appreciate if you'd link the source though. nothing here makes it clear what direction angle anyone is talking about, or what the cause of the alleged problem might be.

EDIT:
from what i see in this thread about fuel gauge sensors., they're talking about stalling going *downhill*, not up, and what's quoted there from J**p sources places the fuel pickup toward the rear of the tank; that reinforces what we were talking about before you brought up problems with Chevys.

agreed though, that it sounds like someone messed up, even if the 392 was primarily intended to be a pavement pounder.

Here ya go....................read it and weep. it did and does happen. There is a lengthy post about the problem.

Here is a quote from part of it...........

No solution that I've seen. I have been on steep inclines with my 392 stalling multiple times (Rose Garden Hill in Moab was most recent scary experience). Pulling the orange release ribbon to get to a flat surface so I can restart. Watch TrailRecon's video from EJS 2023 where he takes a ride with Jim Morrison of Jeep. Jim acknowledges in the video that a 392 at 30+ degree angle for 5 seconds will stall. I just try to stay topped off as much as I can even though the weight sucks. Also carry 2 jerry cans when I know I'm wheeling longer distances.

 

[Terrymo]

My dealership has been good with the whole oil change using only five quarts thing. But if they weren’t, I’d just man up, pull out the dip stick, get a really long plastic straw, and suck out the extra quart myself.

Well that last part isn’t a skill that I normally associate with manliness but no judgement

 

[y2kcbr600]

I did my first two free oil changes with the dealer on my ‘25 Rubicon X. Today I changed it myself for the first time and 6 damn quarts came out! The manual clearly states 5 quarts so I called the dealer and the service advisor said “they put what it needs and the VIN lookup says 6 quarts”. She said every VIN is different. I called BS on it and she transferred me to the parts guy as a second validation. He looked up my VIN and said “nope, it definitely takes 5 quarts”. P.S. the oil pan bolt required me using an impact wrench to loosen! Had to be 80-100 ft/lbs! I’ll never take it in for something I can do myself. Unbelievable.

I quit using the "free" oil changes back in 2020 because of this. One time, they had to change it two times after the first and second over fill in the same day!

Exactly 5qts, no more, no less, every time.

 

[Morrepe]

Just had my oil changed at my long-time independent mechanic. Noticed 6 qts on the invoice. Asked him about it. He said he owns a '22 Gladiator with the 3.6L and that it takes more than 5 qts but not 6. He says these engines usually come in around 5.5 or 5.6 quarts when he does them (including his own). He actually drained the oil from my engine and then put in 5 qts and let it sit for a bit, which came up to about three quarters of the way into the fill zone. He then topped it off to the top of the fill zone. Because he had just installed the filter, he did not put in a new one, so there was probably some oil in the filter that had not completely drained.

 

[Rhinebeck01]

Just had my oil changed at my long-time independent mechanic. Noticed 6 qts on the invoice. Asked him about it. He said he owns a '22 Gladiator with the 3.6L and that it takes more than 5 qts but not 6. He says these engines usually come in around 5.5 or 5.6 quarts when he does them (including his own). He actually drained the oil from my engine and then put in 5 qts, which came up to about three quarters of the way into the fill zone. He then topped it off to the top of the fill zone. Because he had just installed the filter, he did not put in a new one, so there was probably some oil in the filter that had not completely drained.

@Morrepe

So, you paid for a sixth quart of oil that no way did your JL need?

No excuse / justification can be made by your "independent mechanic" with this 6 qt. screwup.....
JL/JT takes 5 qts. of oil !

From FCA press release when they first introduced the 2nd Gen Pentastar...
"Windage-tray weight was slashed by 19 percent and front-cover weight was cut by 5 percent. *The oil pan was redesigned from a two-piece to a single-piece pan and the sump was reduced from a 6-quart fill to a 5-quart fill *– resulting in an overall 5-pound weight savings compared with the previous generation Pentastar V-6 engine."

 

[jadmt]

Just had my oil changed at my long-time independent mechanic. Noticed 6 qts on the invoice. Asked him about it. He said he owns a '22 Gladiator with the 3.6L and that it takes more than 5 qts but not 6. He says these engines usually come in around 5.5 or 5.6 quarts when he does them (including his own). He actually drained the oil from my engine and then put in 5 qts and let it sit for a bit, which came up to about three quarters of the way into the fill zone. He then topped it off to the top of the fill zone. Because he had just installed the filter, he did not put in a new one, so there was probably some oil in the filter that had not completely drained.

sounds like time to find a new long time indy lol..

 

[scootertoo]

Just had my oil changed at my long-time independent mechanic. Noticed 6 qts on the invoice. Asked him about it. He said he owns a '22 Gladiator with the 3.6L and that it takes more than 5 qts but not 6. He says these engines usually come in around 5.5 or 5.6 quarts when he does them (including his own). He actually drained the oil from my engine and then put in 5 qts and let it sit for a bit, which came up to about three quarters of the way into the fill zone. He then topped it off to the top of the fill zone. Because he had just installed the filter, he did not put in a new one, so there was probably some oil in the filter that had not completely drained.

Why would you not put in a new oil filter along with an oil change. Does not make sense to me

 

[BRuby]

Just had my oil changed at my long-time independent mechanic. Noticed 6 qts on the invoice. Asked him about it. He said he owns a '22 Gladiator with the 3.6L and that it takes more than 5 qts but not 6. He says these engines usually come in around 5.5 or 5.6 quarts when he does them (including his own). He actually drained the oil from my engine and then put in 5 qts and let it sit for a bit, which came up to about three quarters of the way into the fill zone. He then topped it off to the top of the fill zone. Because he had just installed the filter, he did not put in a new one, so there was probably some oil in the filter that had not completely drained.

Like others have posted you might reconsider what your mechanic told you.

Whenever we re-fill after any oil drain we put in 4qt then check the dipstick reads ok - then another 1/2qt then the remaining 1/2 qt to the max fill line. Any oil over 5qt is definitely not needed. The pics below were from an oil change we just did a couple days ago on our JLUR 3.6L. Am actually surprised how clean this oil was. Granted was driven only over the last winter. Haha!

We always do our own oil changes because some techs actually have no clue what they are doing and can create damage. When you do this yourself you know it is done right. Sounds like your mechanic is playing you.

 

[Rhinebeck01]

Like others have posted you might reconsider what your mechanic told you.

Whenever we re-fill after any oil drain we put in 4qt then check the dipstick reads ok - then another 1/2qt then the remaining 1/2 qt to the max fill line. Any oil over 5qt is definitely not needed. The pics below were from an oil change we just did a couple days ago on our JLUR 3.6L. Am actually surprised how clean this oil was. Granted was driven only over the last winter. Haha!

We always do our own oil changes because some techs actually have no clue what they are doing and can create damage. When you do this yourself you know it is done right. Sounds like your mechanic is playing you.

I don't even bother to check with the dipstick during or after adding the 5 quarts of oil.
Serves no purpose at all /it is a waste of time to do so.

I know many a JL/JT owner that do as I do when changing their oil.

5 quarts in is 5 quarts in .. and 5 quarts is what the JL and JT take..

 

[BRuby]

I don't even bother to check with the dipstick during or after adding the 5 quarts of oil.
Serves no purpose at all /it is a waste of time to do so.

5 quarts in is 5 quarts in .. and 5 quarts is what the JL and JT take..

Yeah we like to check on the dipstick hashmarks to confirm how much it reads and needs when low. So is not a waste of time for us and serves a purpose. Also since we do multiple vehicles with different fill amounts we always do this. But for the Jeep at 5qt even - agree this is not necessary once known.

 

[Rhinebeck01]

Yeah we like to check on the dipstick hashmarks to confirm how much it reads and needs when low. Also since we do multiple vehicles with different fill amounts we always do this. But for the Jeep at 5qt even - agree this is not necessary once known.

@BRuby
@other's

What I usually tell / relay to new JL/JT owner's is when they do their own oil change the first time that they should add 5 quarts exactly and then let the vehicle sit for say 10 minutes.

I tell them to then, remove the dipstick, wipe it off and then re-insert it.

Then remove the dipstick and with an etching tool, scratch a mark on the dipstick where the oil level is.

Now, whenever they want to see if their oil level is low, they can in the morning before using the JL/
JT, pull the dipstick and see if the oil level is at the etch mark.

I have found this approach is better then trying to read the JL/JT dipstick which is a really difficult one to read for most...

 

[Morrepe]

Why would you not put in a new oil filter along with an oil change. Does not make sense to me

He had already changed the oil and put in a new filter. Drained it again in front of me when I asked about the 6 qts. And then refllled with 5 exactly. When we looked at the dipstick after it had settled a few minutes, it came up a bit short. So when the 5 qts went back in, the filter was the one he had installed with the initial oil change that said six quarts on the invoice. So, it's a new filter.

 

[Morrepe]

@Morrepe

So, you paid for a sixth quart of oil that no way did your JL need?

No excuse / justification can be made by your "independent mechanic" with this 6 qt. screwup.....
JL/JT takes 5 qts. of oil !

From FCA press release when they first introduced the 2nd Gen Pentastar...
"Windage-tray weight was slashed by 19 percent and front-cover weight was cut by 5 percent. *The oil pan was redesigned from a two-piece to a single-piece pan and the sump was reduced from a 6-quart fill to a 5-quart fill *– resulting in an overall 5-pound weight savings compared with the previous generation Pentastar V-6 engine."

HHe credited me back for the 6th quart. Guy's a straight shooter. Does plenty of work for me gratis too. None of that is a concern. Just trying to get it right.

Sponsored