Oil Temp Question

[Tom8]

My Hemi oil temp seems to run high. Temp outside around 70 ~ 75 and the oil temp is at 200 - 215.
When I’m towing my travel trailer, the temp hits 230 - 275. Is this normal? Does anyone know if these truck comes with a oil cooler? If so how can I fell if my truck has it?

 

[TheEnder]

My Hemi oil temp seems to run high. Temp outside around 70 ~ 75 and the oil temp is at 200 - 215.
When I’m towing my travel trailer, the temp hits 230 - 275. Is this normal? Does anyone know if these truck comes with a oil cooler? If so how can I fell if my truck has it?

206 is normal for my truck in 110 degree cali weather, and towing the highest it’s gotten in my recorded time of ownership is 235. Then again, i don’t have a HEMI, i have the 4.7L Magnum. 275 does seem a tad high though. Consider getting rid of your Active Grill Shutters and a 180F t-stat, and maybe the V6 (09-12) fan swap.


Sent from my Blue Onyx RAM 1500

 

[69GWC]

My Hemi oil temp seems to run high. Temp outside around 70 ~ 75 and the oil temp is at 200 - 215.
When I’m towing my travel trailer, the temp hits 230 - 275. Is this normal? Does anyone know if these truck comes with a oil cooler? If so how can I fell if my truck has it?

Sounds about like mine, but mine had never went over 250* that I can remember.
IMO run a good synthetic oil.

 

[Burla]

Learn about the function of your t stat, your engines operating temp is 212f or 100c, as it is with most engines made. That temp look familiar? It is boiling temp, so any moisture in oil vaps off quickly. So anything under 212f is always in normal range. You can get a 180f t-stat, it will open the thermostat 30 degrees sooner, seams to help many trucks.

Towing always increases oil temperature, it is due to load, and it can be a problem in cold climates more so because of how the engine cools, but also at some point your oil loses it's grade. 250f it pretty normal for towing, especially hills, but you will start having issues at that 270f mark long term. You don't want to shut a truck off with that temp, especially in the cold.

How are the trans temps? Do you have 6 speed or 8 speed? How heavy is the trailer? I can say I would be pulling over at 260f and let the truck idle a bit if not on a hill with a gas engine.

 

[Tom8]

Learn about the function of your t stat, your engines operating temp is 212f or 100c, as it is with most engines made. That temp look familiar? It is boiling temp, so any moisture in oil vaps off quickly. So anything under 212f is always in normal range. You can get a 180f t-stat, it will open the thermostat 30 degrees sooner, seams to help many trucks.

Towing always increases oil temperature, it is due to load, and it can be a problem in cold climates more so because of how the engine cools, but also at some point your oil loses it's grade. 250f it pretty normal for towing, especially hills, but you will start having issues at that 270f mark long term. You don't want to shut a truck off with that temp, especially in the cold.

How are the trans temps? Do you have 6 speed or 8 speed? How heavy is the trailer? I can say I would be pulling over at 260f and let the truck idle a bit if not on a hill with a gas engine.

Thanks for the explanation. Makes much sense. What is the Mopar default tstat? I was thinking replacing it with a 190tstat.

 

[Burla]

Thanks for the explanation. Makes much sense. What is the Mopar default tstat? I was thinking replacing it with a 190tstat.

I believe it is 203.

Set your evic to coolant temp and watch when the t stat opens in real time. Mine goes up to 204-203f and never comes off that number in use.

Coolant temp and operating temp aren't the same thing, water and coolant is better at dissipating heat then oil is.

 

[Burla]

I think 190 is a good plan, see if it helps, if not then go to 180 t-stat. T-stats aren't all that expensive, keep the old one in a jar with distilled water in there, in case you put it back or alternate in winter.

 

[crash68]

My Hemi oil temp seems to run high. Temp outside around 70 ~ 75 and the oil temp is at 200 - 215.
When I’m towing my travel trailer, the temp hits 230 - 275.

When does oil hit 275°F? If this happening while climbing a grade, back off how fast your trying to climb. Sometimes all it takes is slowing down a couple of MPH, it's the wind resistance that really add the load.

 

[Tom8]

Learn about the function of your t stat, your engines operating temp is 212f or 100c, as it is with most engines made. That temp look familiar? It is boiling temp, so any moisture in oil vaps off quickly. So anything under 212f is always in normal range. You can get a 180f t-stat, it will open the thermostat 30 degrees sooner, seams to help many trucks.

Towing always increases oil temperature, it is due to load, and it can be a problem in cold climates more so because of how the engine cools, but also at some point your oil loses it's grade. 250f it pretty normal for towing, especially hills, but you will start having issues at that 270f mark long term. You don't want to shut a truck off with that temp, especially in the cold.

How are the trans temps? Do you have 6 speed or 8 speed? How heavy is the trailer? I can say I would be pulling over at 260f and let the truck idle a bit if not on a hill with a gas engine.

Thanks for the explanation. Makes much sense. What is the Mopar default tstat? I was thinking fmkre along the line of a 190tstat.

When does oil hit 275°F? If this happening while climbing a grade, back off how fast your trying to climb. Sometimes all it takes is slowing down a couple of MPH, it's the wind resistance that really add the load.

275 during the grade. But yes I will have to back off a bit and let it do it’s thing.

 

[Tom8]

I think 190 is a good plan, see if it helps, if not then go to 180 t-stat. T-stats aren't all that expensive, keep the old one in a jar with distilled water in there, in case you put it back or alternate in winter.

Would 180 cause a check engine light? Good idea regarding keeping the old ones in a jar for winter use.

 

[Burla]

I don't know, it might, but a CEL is one thing and driving at 270f is another. There are plenty of guys on RF running the 180, check out the threads. Good luk

 

[Wild one]

Would 180 cause a check engine light? Good idea regarding keeping the old ones in a jar for winter use.

You're save with a 180 t-stat.Milodon makes a high flow 180 t-stat that might be what you should look into.If you have grill shutters try popping the middle ones out ,just leave the upper and lower slats in place so the putor still thinks the shutters are working. Another thing to look at is swapping out your grill for the open style honeycomb grill,like the express's /R/T's etc, have if you have the more restrictive Sport style grill.

 

[Tom8]

You're save with a 180 t-stat.Milodon makes a high flow 180 t-stat that might be what you should look into.If you have grill shutters try popping the middle ones out ,just leave the upper and lower slats in place so the putor still thinks the shutters are working. Another thing to look at is swapping out your grill for the open style honeycomb grill,like the express's /R/T's etc, have if you have the more restrictive Sport style grill.

I wonder when you turn on tow mode, if the active shutter would automatically switch to stay open. You would think the engineer would think of such things.

 

[crash68]

I wonder when you turn on tow mode, if the active shutter would automatically switch to stay open. You would think the engineer would think of such things.

The Tow/Haul switch doesn't effect the AGS but running the AC does. Coolant temp, oil temp and refrigerant pressure are all factored in part for the AGS. Run the AC if your not already.

 

[Wild one]

I wonder when you turn on tow mode, if the active shutter would automatically switch to stay open. You would think the engineer would think of such things.

What grill is in your truck. A lot of guys don't realise there is a big difference in air flow through the different grills.The Sport style grill is very restrictive compared to the more open honey comb grill. You can pop out the middle shutters pretty easily,they just clip in on the ends and will pull right out if you flex them in the middle,they'll also pop right back in reversing the procedure. Pull the middle shutters out and see if it makes any difference,if it doesn't re-install them,but it's worth spending the couple minutes popping them out to see if it changes your temps any.

 

[Tom8]

What grill is in your truck. A lot of guys don't realise there is a big difference in air flow through the different grills.The Sport style grill is very restrictive compared to the more open honey comb grill. You can pop out the middle shutters pretty easily,they just clip in on the ends and will pull right out if you flex them in the middle,they'll also pop right back in reversing the procedure. Pull the middle shutters out and see if it makes any difference,if it doesn't re-install them,but it's worth spending the couple minutes popping them out to see if it changes your temps any.

Mine is this one. sorry for the half pic. Was trying to capture a wheel spacers from this pic. Don't thinks it's sports. However I think it also has a middle section but not sure if it's honey comb.

 

[Wild one]

Mine is this one. sorry for the half pic. Was trying to capture a wheel spacers from this pic. Don't thinks it's sports. However I think it also has a middle section but not sure if it's honey comb.

View attachment 207965

That's the ****** grill,lol. Look at it close,and you'll see it's very restrictive to airflow,(little holes between the chrome slats),then go look at a cheap Tradesmen/Express grill,and it'll be very obvious which style grill flows more air

 

[Tom8]

That's the ****** grill,lol. Look at it close,and you'll see it's very restrictive to airflow,(little holes between the chrome slats),then go look at a cheap Tradesmen/Express grill,and it'll be very obvious which style grill flows more air

Yes, style over functionality. Sometimes the engineer over at Ram get veto from the marketing/style department so they can sell trucks. Do you know if the middle section can come off easily?

 

[Wild one]

Yes, style over functionality. Sometimes the engineer over at Ram get veto from the marketing/style department so they can see trucks. Do you know if the middle section can come off easily?

They just pop out the back and you can replace them with the honey comb inserts. You can get the honey comb inserts in either chrome or black.I don't think they are even that bad if you buy them right through the dealer,but i'd hunt around first,and if nothing pops up,then try the dealer,lol. You need the inserts for a 2013 and newer truck,the 2012's and older use a different insert

 

[Burla]

That's the ****** grill,lol. Look at it close,and you'll see it's very restrictive to airflow,(little holes between the chrome slats),then go look at a cheap Tradesmen/Express grill,and it'll be very obvious which style grill flows more air

Just cut like one of those sections out in all 4 slats, I would. That is a terrible grill, lol.

I'd just get an aftermarket grill, might fix this issue over night.