5.7 Oil temperatures while towing

[Cr250Ram]

***NOT talking about coolant or trans temps***

I am reading stuff all over the place about oil temps when towing.
-TFL hit, i think it was 290 degrees towing up the Ike with their 3.92 Rebel.
-Another member, on this or another forum, hit over 294 and the trucks AC turned off and started blowing heat out the vents to help cool the truck. He had the diesel though.
-If i recall correctly, I hit 268 towing at 13,000 combined (3.21) up a good grade In 108 dry weather at 55. Driving around town today i was at 222 oil temp.

There is nothing in the manual about oil temps. I understand synthetic oil has a much higher temp rating than dino oil. But, what is the trucks max safe oil temp? Does the truck have a safe limit where you will get warnings on the dash for too hot?

 

[Dragonmaster13]

Truck will go into preservation mode when you get there. Hammer down and don’t worry about it. 280-290 is near the limit.

 

[cj7]

I believe sustained >240 is too hot. I know the oil can handle it for short periods, but it gets really thin, wears out the additive pkg more quickly, and is close to limits.

The day the warranty runs out, I’ve got an oil cooler and remote filter/220 thermostat to install...

 

[Orion10182011]

Synthetic oil will handle the temperature better.

 

[Redfour5]

***NOT talking about coolant or trans temps***

I am reading stuff all over the place about oil temps when towing.
-TFL hit, i think it was 290 degrees towing up the Ike with their 3.92 Rebel.
-Another member, on this or another forum, hit over 294 and the trucks AC turned off and started blowing heat out the vents to help cool the truck. He had the diesel though.
-If i recall correctly, I hit 268 towing at 13,000 combined (3.21) up a good grade In 108 dry weather at 55. Driving around town today i was at 222 oil temp.

There is nothing in the manual about oil temps. I understand synthetic oil has a much higher temp rating than dino oil. But, what is the trucks max safe oil temp? Does the truck have a safe limit where you will get warnings on the dash for too hot?

I have the 3.21 and hit 268/9 on mountains pretty consistently. I think my highest was 272. Based upon my research, this isn't a big deal. Normal driving is around low 230's.

 

[silver billet]

***NOT talking about coolant or trans temps***

I am reading stuff all over the place about oil temps when towing.
-TFL hit, i think it was 290 degrees towing up the Ike with their 3.92 Rebel.
-Another member, on this or another forum, hit over 294 and the trucks AC turned off and started blowing heat out the vents to help cool the truck. He had the diesel though.
-If i recall correctly, I hit 268 towing at 13,000 combined (3.21) up a good grade In 108 dry weather at 55. Driving around town today i was at 222 oil temp.

There is nothing in the manual about oil temps. I understand synthetic oil has a much higher temp rating than dino oil. But, what is the trucks max safe oil temp? Does the truck have a safe limit where you will get warnings on the dash for too hot?

Do you have a link to the TFL video? These guys test their trucks completely different than I drive mine, I would sooner slow down and take another minute up the "ike" and keep my temps inline, instead of trying to get to the top as fast as I can. So I'd like to see how they tested the rebel.

I believe sustained >240 is too hot. I know the oil can handle it for short periods, but it gets really thin, wears out the additive pkg more quickly, and is close to limits.

The day the warranty runs out, I’ve got an oil cooler and remote filter/220 thermostat to install...

I'm interested in your idea there, do you have any details you can share? My truck is under warranty too but I'm less concerned about the warranty and more concerned about having an engine left by the time the warranty ends.

The most I've seen in my truck has been 120 C, but I have not tried towing up a hill anywhere close to the eisenhower tunnel etc.

 

[Richard320]

Do you have a link to the TFL video? These guys test their trucks completely different than I drive mine, I would sooner slow down and take another minute up the "ike" and keep my temps inline, instead of trying to get to the top as fast as I can. So I'd like to see how they tested the rebel.

TFLTruck Pits The Ram 1500 HEMI eTorque Against The Ford F-150 PowerBoost:

TFLTruck Pits The Ram 1500 HEMI eTorque Against The Ford F-150 PowerBoost: Hybrid Half-Tons Tackle The Ike Gauntlet... As gas prices continue to rise, automakers continue to come up with more electrified options for their lineups. This includes the half-ton pickup segment with both RAM and...

5thgenrams.com

 

[silver billet]

That was an interesting test. The hemi got better MPG, but it also worked harder vs the turbo as can be seen by both RPM's (4500 vs < 3000), and the temperature (275 vs < 230?? hard to see what the turbo was reading, but it didn't look hot at all).

Hate to say it as I'm a huge fan of the N/A, but in terms of power and cooling it appears the turbo beat the hemi pretty bad. In terms of longevity, I have to think the hemi is still the better option, especially if we add some better cooling.

 

[SD Rebel]

I see the 5.7L Hemi as a good in-between motor compared to the competition offerings from GM & Ford. It's not at the power level of the 6.2L or 3.5L TT, but it's more powerful than the 5.3L & 2.7L TT.

I do wish RAM could come up with a high end engine option in the 1500 class truck, something to compete with both the 6.2L and Ecoboost, not sure if the 6.4L is the answer, a bit less powerful and probably too heavy & fuel thirsty for that application.

 

[silver billet]

I see the 5.7L Hemi as a good in-between motor compared to the competition offerings from GM & Ford. It's not at the power level of the 6.2L or 3.5L TT, but it's more powerful than the 5.3L & 2.7L TT.

I do wish RAM could come up with a high end engine option in the 1500 class truck, something to compete with both the 6.2L and Ecoboost, not sure if the 6.4L is the answer, a bit less powerful and probably too heavy & fuel thirsty for that application.

Not the 410 hp 6.4 from the 2500, no, but the 475 HP 6.4 SRT I'd take that. They put it in the Durango a while ago, it boggles the mind that the most useful place to put that SRT, is in a light duty truck. Yet they stuff it in the challenger, durango, grand cherokee all fun cars sure, but Ram ... crickets.

 

[SD Rebel]

Not the 410 hp 6.4 from the 2500, no, but the 475 HP 6.4 SRT I'd take that. They put it in the Durango a while ago, it boggles the mind that the most useful place to put that SRT, is in a light duty truck. Yet they stuff it in the challenger, durango, grand cherokee all fun cars sure, but Ram ... crickets.

Excellent point on the SRT version. I figure the cost maybe is why they won't, but it would be a nice thing to have for 2023 when the RAM get's it's mid-cycle refresh. The GM trucks came a year early to fix their interiors, but RAM can come out swinging with a major driveline upgrade to keep the momentum going.

 

[IvoryHemi]

Not the 410 hp 6.4 from the 2500, no, but the 475 HP 6.4 SRT I'd take that. They put it in the Durango a while ago, it boggles the mind that the most useful place to put that SRT, is in a light duty truck. Yet they stuff it in the challenger, durango, grand cherokee all fun cars sure, but Ram ... crickets.

The new Grand Wagoneer also get the 6.4L now too (471 hp/ 455 lb-ft)

 

[Redfour5]

TFLTruck Pits The Ram 1500 HEMI eTorque Against The Ford F-150 PowerBoost:

TFLTruck Pits The Ram 1500 HEMI eTorque Against The Ford F-150 PowerBoost: Hybrid Half-Tons Tackle The Ike Gauntlet... As gas prices continue to rise, automakers continue to come up with more electrified options for their lineups. This includes the half-ton pickup segment with both RAM and...

5thgenrams.com

This is the video that convinced me to go ahead with the 3.21 rear end in the unit I wanted on the lot a Built to Serve... After having a 3.92 for six years I do notice the difference in HOW it toes using the transmission more than the gearing, but I'm fine with it. I notice in the video they are NOT concerned about the oil temps.

 

[Cr250Ram]

@silver billet

Here you go, you can see the oil temp on the dash. 280.

This video shows results of oil tests and bore scope of cylinders

 

[Mr.Grid]

I just went from a 2011 Hemi Ram (392 hp) with 179k miles to this new 2022 Hemi Ram (395hp). This new one easily runs 15*- 20* hotter oil temps compared to the 2011….same engine. Why is this???? When towing 5% grades my 2011 never saw more than 225* on the hottest (90*+) day.

Does anyone know what oil type (Synthetic, Semi-Synthetic or Non-Synthetic) is in the Hemi 5.7 engine FROM the factory ??? I know it calls for 0w20 when changing.

 

[silver billet]

I just went from a 2011 Hemi Ram (392 hp) with 179k miles to this new 2022 Hemi Ram (395hp). This new one easily runs 15*- 20* hotter oil temps compared to the 2011….same engine. Why is this???? When towing 5% grades my 2011 never saw more than 225* on the hottest (90*+) day.

Does anyone know what oil type (Synthetic, Semi-Synthetic or Non-Synthetic) is in the Hemi 5.7 engine FROM the factory ??? I know it calls for 0w20 when changing.

It's 5w-20 from the factory and that's what it calls for in the manual. A number of us who tow run full synthetic (not mineral, or even "synthetic blend", has to be 100% synthetic) 5w-30. When temps get that hot, you really need the 30 weight. And regular mineral oil shouldn't be used above 250.

Apparently this is "normal", our 5th gens run hotter (possibly for emissions/mpg reasons) but I don't like it. I plan to put an external oil cooler with a built in thermostat so that it only activates once the oil starts getting past 230 or so. It's not good to attempt to cool it below that as that might interfere with the rest of the cooling system in place.

 

[Richard320]

I'm hoping that this was just a typo..... Otherwise things could get ugly with a 232F flash point.

https://www.autozone.com/motor-oil-and-transmission-fluid/engine-oil/p/stp-dexos-engine-oil-full-synthetic-5w-20-1-quart/811793_0_0

 

[Mr.Grid]

It's 5w-20 from the factory and that's what it calls for in the manual.

As for the recommended oil in the 2022 Ram Hemi, it is 0w20 Synthetic that meets the MS-6395 spec.

 

[SD Rebel]

I'm hoping that this was just a typo..... Otherwise things could get ugly with a 232F flash point.

https://www.autozone.com/motor-oil-and-transmission-fluid/engine-oil/p/stp-dexos-engine-oil-full-synthetic-5w-20-1-quart/811793_0_0

View attachment 110626

That appears to be a typo, they meant C instead of F.

The flashpoint of that oil in this case is 406F: https://www.autozone.com/motor-oil-...oil-full-synthetic-5w-20-6-gal-box/562206_0_0

My favorite is Shell Rotella Gas Truck 5W-20, which has a flashpoint of 455F, meets all of Chrysler Requirements and only $25 a gallon.

 

[Scram1500]

As for the recommended oil in the 2022 Ram Hemi, it is 0w20 Synthetic that meets the MS-6395 spec.
View attachment 110633

I'm hopeful that's a typo, the manual for many years has been 5w 20, and until recently they also said 5w 30 for heavy duty use