Fluids temperature norms

[Gruffid]

For all of the folks here who have other Stellantis vehicles with the 3.0L ecodiesel, what are your normal operating coolant, transmission, and oil temperatures? (No, I didn’t search, but I’ve been involved in or have read most of the other threads regarding ecodiesel cooling on this forum - so if someone has indeed asked this question, please just point me in the right direction)

i have a 25 mile commute along I-10 in Central Texas where we are currently experiencing 77-79*F between 7:30 and 8:00 in the morning and 100-104*F between 4 and 5 in the afternoon.

in the morning, I am seeing the following temperatures: (I am not hearing the fan when I stop)

coolant: 206-208
Transmission: 197-199
Oil: 217-221

I will update with coolant and transmission temperatures later,
But I am seeing the following afternoon temperatures:

coolant: xxx
Transmission: xxx
Oil: 221 -223

are y’all seeing similar temperatures? Are y’all with non-gladiator ecodiesels seeing similar temperatures?

if so, that would seem to indicate a standard (cooling) performance. If the temperatures are different, then perhaps there are other thermostats, fan motors, or other equipment we could borrow from the other vehicles.

thoughts?

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[Rusty PW]

I'm about the same as you at 5,800 miles.

 

[ShadowsPapa]

For all of the folks here who have other Stellantis vehicles with the 3.0L ecodiesel, what are your normal operating coolant, transmission, and oil temperatures? (No, I didn’t search, but I’ve been involved in or have read most of the other threads regarding ecodiesel cooling on this forum - so if someone has indeed asked this question, please just point me in the right direction)

i have a 25 mile commute along I-10 in Central Texas where we are currently experiencing 77-79*F between 7:30 and 8:00 in the morning and 100-104*F between 4 and 5 in the afternoon.

in the morning, I am seeing the following temperatures: (I am not hearing the fan when I stop)

coolant: 206-208
Transmission: 197-199
Oil: 217-221

I will update with coolant and transmission temperatures later,
But I am seeing the following afternoon temperatures:

coolant: xxx
Transmission: xxx
Oil: 221 -223

are y’all seeing similar temperatures? Are y’all with non-gladiator ecodiesels seeing similar temperatures?

if so, that would seem to indicate a standard (cooling) performance. If the temperatures are different, then perhaps there are other thermostats, fan motors, or other equipment we could borrow from the other vehicles.

thoughts?

I drive a gas JT - those are normal numbers for gas - even other vehicles I have My Comanche 4.0 used to run 210-215 engine temp.
You can run well over that coolant temp without any issue. Transmission could be over 200-220 and no issue, and oil generally runs where you are at, maybe a bit higher on gas.

In short, those are great numbers for either.

 

[KW80]

My operating temps with ambient temps in the 70s on my primarily highway commute are pretty similar with what you shared at my typical 70 to 75 mph cruising speed. Normally I’m right around 215 oil temp +/- fluctuating between 30 to 50% torque demand depending on hills and accelerating to pass.

 

[Gruffid]

Unfortunately I ran into traffic on the way home yesterday and had to detour. As a result, I didn’t have similar circumstances to update the post with. Hopefully I’ll get them tomorrow.

@Rusty PW, i have approximately 35,500 miles on the clock. That’s a relevant data point I didn’t think to consider.

@ShadowsPapa, that’s good info about the 3.6L normal operating temperatures. It helps to get the model specific variations with a change in engines. It may also indicate that the commonality between the engines could be detrimental to specific engines (e.g. Stellantis used the same auxiliary parts for different engines to save money, at the risk of compromising certain engines with higher cooling).

I also want to find out what the impact is on oil temperatures (if any) from increased coolant temperature at highway speeds. I did notice some correlations, but in stop and go traffic,I had other priorities.

@KW80, that’s good info. I thought my cooling system was performing as designed, you’ve helped verify intended cooling performance. It seems your oil temps are slightly cooler than mine. Are your outside ambient/air temperatures similar (77-79 in the morning and 100-104 in the afternoon)?

 

[22EcoDs]

Your temps look fine to me. These were mine towing a uhaul car trailer with car on it up a grade.

 

[Gruffid]

Your temps look fine to me. These were mine towing a uhaul car trailer with car on it up a grade.

Thanks for the screen shot. I see your outside air temperatures are 57*. Do you think your temperatures would be higher with higher outside air temperatures?

Your oil temperatures are somewhat elevated. Do you know how much weight you were towing?

 

[KW80]

Unfortunately I ran into traffic on the way home yesterday and had to detour. As a result, I didn’t have similar circumstances to update the post with. Hopefully I’ll get them tomorrow.

@Rusty PW, i have approximately 35,500 miles on the clock. That’s a relevant data point I didn’t think to consider.

@ShadowsPapa, that’s good info about the 3.6L normal operating temperatures. It helps to get the model specific variations with a change in engines. It may also indicate that the commonality between the engines could be detrimental to specific engines (e.g. Stellantis used the same auxiliary parts for different engines to save money, at the risk of compromising certain engines with higher cooling).

I also want to find out what the impact is on oil temperatures (if any) from increased coolant temperature at highway speeds. I did notice some correlations, but in stop and go traffic,I had other priorities.

@KW80, that’s good info. I thought my cooling system was performing as designed, you’ve helped verify intended cooling performance. It seems your oil temps are slightly cooler than mine. Are your outside ambient/air temperatures similar (77-79 in the morning and 100-104 in the afternoon)?

What I quoted applies only to ambient temps in the 70s which is what it’s been on average where/when I’ve been driving recently. We rarely see temps at or above 100 degrees in the Chicago area, not even in July/Aug, so I can’t really comment on that. I didn’t have the car scanner app setup last summer so I didn’t monitor as routinely back then when temps were in the 80s-90s, but I can check back later this summer in once we see consistently higher ambient temps.

 

[ShadowsPapa]

I'm not sure yet what your concern is. Your temperatures in the first post were well under any areas of concern, you weren't even close.

As far as parts in common, yes, but that's not a problem - it's because for transmissions the temperatures would all run the same, for oil - similar - oil temperatures would be comparable, and so on.

What is your specific concern? From what I see so far, there isn't any.
At least not now.
There have been multiple threads on the operating temperatures of the diesel in these - with a lot of images showing the various temperatures.
Unless you see things a whole lot higher in higher ambient temps, yours is running cool at this point.

Thanks for the screen shot. I see your outside air temperatures are 57*. Do you think your temperatures would be higher with higher outside air temperatures?

Your oil temperatures are somewhat elevated. Do you know how much weight you were towing?

That's not really elevated, especially not for towing. He's got a ways to go before there's any concern, especially is he's using a good quality oil with a high thermal breakdown temperature.

 

[22EcoDs]

Thanks for the screen shot. I see your outside air temperatures are 57*. Do you think your temperatures would be higher with higher outside air temperatures?

Your oil temperatures are somewhat elevated. Do you know how much weight you were towing?

Yea I should have gotten a shot of my scanguage with turbo outlet temp, it was over 1100 for most the hill pass. I did not have a derate issue. It was ~5400ibs car and trailer. I plan on towing this summer and will see if the numbers change. Physics wise, yes I do think they would be higher with ambient temps.

 

[Gruffid]

I'm not sure yet what your concern is. Your temperatures in the first post were well under any areas of concern, you weren't even close.

As far as parts in common, yes, but that's not a problem - it's because for transmissions the temperatures would all run the same, for oil - similar - oil temperatures would be comparable, and so on.

What is your specific concern? From what I see so far, there isn't any.
At least not now.
There have been multiple threads on the operating temperatures of the diesel in these - with a lot of images showing the various temperatures.
Unless you see things a whole lot higher in higher ambient temps, yours is running cool at this point.



That's not really elevated, especially not for towing. He's got a ways to go before there's any concern, especially is he's using a good quality oil with a high thermal breakdown temperature.

@ShadowsPapa

i agree, my temperatures- particularly in the morning when the OAT is in the upper 70’s are low.

however, I am seeing the fan kick on in the afternoon when OATs are above 100*.

There are two things I can control with this experiment- speed and weight.

I think I am noticing the fan come on - even when unloaded in afternoon high OATs. But before it comes on, I think I’m seeing oil temperatures around upper 230* (239*F to be specific) even though I’m not towing, not on an incline (overpasses shouldn’t count), and not traveling excessively fast.

you might say “so what.” Well, if the other gladiators that aren’t ecodiesel equipped seem to manage heat better, and the other vehicles that have the ecodiesel also manage heat better, what are the manufacturing differences? What are the commonalities?

the cooling thread has a new post about the ram and Maserati that have an oil cooler and larger radiators. I don’t think we can do anything about the radiator. But I want to know what the difference they have in shedding heat. Not in just they have larger radiator and dedicated oil cooler, but what effects do those parts have on cooling.

to start understanding that, we have to understand our own ability to shed heat.

 

[Almost]

@ShadowsPapa

i agree, my temperatures- particularly in the morning when the OAT is in the upper 70’s are low.

however, I am seeing the fan kick on in the afternoon when OATs are above 100*.

There are two things I can control with this experiment- speed and weight.

I think I am noticing the fan come on - even when unloaded in afternoon high OATs. But before it comes on, I think I’m seeing oil temperatures around upper 230* (239*F to be specific) even though I’m not towing, not on an incline (overpasses shouldn’t count), and not traveling excessively fast.

you might say “so what.” Well, if the other gladiators that aren’t ecodiesel equipped seem to manage heat better, and the other vehicles that have the ecodiesel also manage heat better, what are the manufacturing differences? What are the commonalities?

the cooling thread has a new post about the ram and Maserati that have an oil cooler and larger radiators. I don’t think we can do anything about the radiator. But I want to know what the difference they have in shedding heat. Not in just they have larger radiator and dedicated oil cooler, but what effects do those parts have on cooling.

to start understanding that, we have to understand our own ability to shed heat.

The differences are just that. Radiators and oil coolers, FCA couldn't fit the same amount as they could in the Ram 1500 for example so the Jeep is compromised in this regard. I have the same temps as you and that is totally normal. Same for the trans temp, the trans runs on its own thermostat and cycles around 185-190, that is the normal operating temp for the trans.

 

[KW80]

Been consistently in the 80s and some 90s the past week and a half, typically I’ve seen low 220s on oil temps. The pic below was today at 88 degrees ambient after driving on the interstate for about an hour. Was fluctuating between 217 to 220 oil temp but the wind was fairly mellow, so the engine was hardly working, at 70-75mph I was averaging 30mpg which is higher than normal.

 

[Rusty PW]

Coming home on I70 in Utah where the speed is 80 mph on a 105F day. For 3 hrs, my tranny temp was 199F, water temp was 215F, and oil temp was 230F.

Going over Vail and Eisenhower passes at night, temps in the low 60's, speed limit is 70 mph. Water temp was around 210F. Tranny temp around 195F. And oil temp around 235F.

Have 8,300 miles on the clock now.

 

[Gruffid]

Going from Denver to steamboat springs, traveling the speed limit up hill, the highest oil temps I saw was 250* at 65 mph. Coolant temp was about 215* and oil was around 219*.

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