6 Quarts engine oil!

[Ben-Zair Dun-Zatt]

I suspect the mechanic that did the oil change maybe he thought it was a 3.8L, similar to the JK from years ago.
I know you said he checked the VIN, but he might of gotten it confused with another Jeep JK that had the 3.8L in it.

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[xj2jk2jlu]

I suspect the mechanic that did the oil change maybe he thought it was a 3.8L, similar to the JK from years ago.
I know you said he checked the VIN, but he might of gotten it confused with another Jeep JK that had the 3.8L in it.

The 2012-2018 JK 3.6 took 6 quarts too. The JL, same engine, has smaller oil pan.

 

[The Duke01]

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.

That’s insane! I’ve always done my ‘23 rubicon since I bought. It’s the easiest oil change to do. Definitely only takes 5 quarts. I just did my diffs yesterday. Going to do the transfer case this weekend. One thing I love about the jeep is how easy it is to service.

 

[scootertoo]

For some of you super serious (off roaders), where you are sometimes climbing steep hills, etc. you might want to error on the side of some (overfill) of your crankcase. In another brand, that has become a semi standard move to ward off "oil starvation".
Chevy Trailblazers with 4WD in the older models used a oil pan that has a horizonal hole thru it and a front sump. Lots of hill climbing with many of them resulted in engine problems due to oil rushing to the back side of the pan and not getting picked up by the oil pump.

Likewise, I and many other Chevy SSR owners with the 6.0 Vette engine have similar problems. This engine also uses the old (Trailblazer) pan. Some SSR owners that really like to put the pedal to the medal and full out have also experienced the (oil starvation) as the oil gets slung to the rear of the pan.
The go to solution (other than swapping out the pan to a later model Vette pan) is to overfill the pan by up to a full quart. That has resulted in no problems with the overfill and a remedy to the starvation situation.

 

[zouch]

if that's true, it sounds like J**p (and many others) figured out where to put the oil pickup long before Chevy did.

i'll take my chances with the factory-recommended oil level over over-filling and increasing the risk of getting all the oil wound up around the crank and not going where it needs to.

For some of you super serious (off roaders), where you are sometimes climbing steep hills, etc. you might want to error on the side of some (overfill) of your crankcase. In another brand, that has become a semi standard move to ward off "oil starvation".
Chevy Trailblazers with 4WD in the older models used a oil pan that has a horizonal hole thru it and a front sump. Lots of hill climbing with many of them resulted in engine problems due to oil rushing to the back side of the pan and not getting picked up by the oil pump.

Likewise, I and many other Chevy SSR owners with the 6.0 Vette engine have similar problems. This engine also uses the old (Trailblazer) pan. Some SSR owners that really like to put the pedal to the medal and full out have also experienced the (oil starvation) as the oil gets slung to the rear of the pan.
The go to solution (other than swapping out the pan to a later model Vette pan) is to overfill the pan by up to a full quart. That has resulted in no problems with the overfill and a remedy to the starvation situation.

 

[T-VIS]

Just did my 21 ecodiesel, 9 quarts, 2 filters, injector cleaner, and pump lube

 

[mgroeger]

I suspect the mechanic that did the oil change maybe he thought it was a 3.8L, similar to the JK from years ago.
I know you said he checked the VIN, but he might of gotten it confused with another Jeep JK that had the 3.8L in it.

I f that is the case that "mechanic" should be a greater at Walmart.

 

[scootertoo]

if that's true, it sounds like J**p (and many others) figured out where to put the oil pickup long before Chevy did.

i'll take my chances with the factory-recommended oil level over over-filling and increasing the risk of getting all the oil wound up around the crank and not going where it needs to.

"
if that's true, it sounds like J**p (and many others) figured out where to put the oil pickup long before Chevy did.

Well, maybe Jeep didn't get it all right as to where to put the gas pickup. Somewhere on this forum is a 392 Jeep off roader that had his engine quit on a steep run. He had plenty of gas in the tank, but at the angle he must have been, the engine starved for gas.

 

[DirtWrangler]

Still, 4.4 qt is such a pita for measuring and having leftovers. Toyota engineers can't design an oil system capacity that rounds up or down? Pentastar designers got to 5 on the nose, super convenient with the 5 qt jugs.

I use a unique method, it seems. I add however much oil it takes to hit the full mark in the dipstick.

 

[Richard_JL]

I use a unique method, it seems. I add however much oil it takes to hit the full mark in the dipstick.

How is that easier than pouring in an entire 5qt container then tossing container in the trash.

 

[alphawolff]

I suspect the mechanic that did the oil change maybe he thought it was a 3.8L, similar to the JK from years ago.
I know you said he checked the VIN, but he might of gotten it confused with another Jeep JK that had the 3.8L in it.

not going to believe this for a second. if a 3.8l comes into the shop it's an oddity and acknowledged. most arent even on the road anymore

 

[zouch]

not sure what that has to do with the oil, but that story seems fishy.

isn't the fuel pump pickup for the 392 in a small 'cup' (like so many others)?
i'd be curious to know what angle(s) that vehicle was at and for how long before i'd lose my skepticism on that story. at least most vehicles have had their fuel pickups toward the rear of the tank for decades already, since that's where where the fuel goes under acceleration (when it's most needed).

"
if that's true, it sounds like J**p (and many others) figured out where to put the oil pickup long before Chevy did.

Well, maybe Jeep didn't get it all right as to where to put the gas pickup. Somewhere on this forum is a 392 Jeep off roader that had his engine quit on a steep run. He had plenty of gas in the tank, but at the angle he must have been, the engine starved for gas.

 

[AlgUSF]

How is that easier than pouring in an entire 5qt container then tossing container in the trash.

I pour my old oil back into the container, collect 5 containers and run them up to the hazmat for disposal.

 

[alphawolff]

if that's true, it sounds like J**p (and many others) figured out where to put the oil pickup long before Chevy did.

i'll take my chances with the factory-recommended oil level over over-filling and increasing the risk of getting all the oil wound up around the crank and not going where it needs to.

i don't think anyone is recommending you purposely overfill the oil. it's just filling to 6 really isn't going to hurt anything if it happens.

 

[scootertoo]

not sure what that has to do with the oil, but that story seems fishy.

isn't the fuel pump pickup for the 392 in a small 'cup' (like so many others)?
i'd be curious to know what angle(s) that vehicle was at and for how long before i'd lose my skepticism on that story. at least most vehicles have had their fuel pickups toward the rear of the tank for decades already, since that's where where the fuel goes under acceleration (when it's most needed).

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.

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