2015 5.7 hemi high oil temp

[gustin1020]

Looking for advice on lowering engine oil Temps, under acceleration up hill I've seen Temps up to 230 degrees on hot day. I've read about the 180 degree thermostat, any other advice. All other Temps are normal along with normal oil pressure.

 

[crash68]

If you were pushing over 260° then that would be pushing the hot side but full synthetic oil will handle those temps. You want the oil up in the low 200°s while driving.
I don't think the '15s had a dedicated oil cooler in the Hemi, that would be something to add if you really think the oil is too warm.

 

[kurek]

There was an engine oil cooler included on police package equipped 5.7 Rams - https://store.mopar.com/v-2012-ram-1500--st--5-7l-v8-gas/5-7l-hemi-gas-engine--engine-oil-cooler

I'm not sure how it all installs, haven't looked into it. The plumbing for the lower hose looks obvious enough it's a "T" with the radiator hose but the upper one is less obvious.

 

[CamperMike]

230 is normal. It is usually a bit above coolant. While towing in mountains/hills 250s are common and it may hit 260 for a brief time.

 

[Burla]

230 is normal. It is usually a bit above coolant. While towing in mountains/hills 250s are common and it may hit 260 for a brief time.

x2. oil doesnt dissipate heat and efficient as coolant, just depends on how soon you see 230f. I'd opt for a 180 t stat before an oil cooler, hands down. Not terribly out of normal here.

 

[Heatheroo]

Timely thread. I took the 1500 for the first reasonably long drive yesterday and noticed the oil temps edging up into the high 220's. I was wondering at what point I needed to be concerned. Apparently, this wasn't the point. Thanks,

 

[1999 White C5 Coupe]

Looking for advice on lowering engine oil Temps, under acceleration up hill I've seen Temps up to 230 degrees on hot day. I've read about the 180 degree thermostat, any other advice. All other Temps are normal along with normal oil pressure.

Installing a 180-degree thermostat will have no effect.

Once an engine thermostat opens at 180, 190 or 195 degrees (F) - it remains open as long as the engine is operating at or above the thermostat rating.

A lower temperature engine thermostat does not make the engine oil any cooler.

 

[GsRAM]

The computer is programmed to operate at a preset operating temperature, based on the oem thermostat. I would be concerned that installing a lower temperature thermostat would cause the ecm to run in constant open loop because it would never see the temperature it's looking for.

My oil temps get into the 220s regularly and when towing. I use a high quality full synthetic oil, am diligent about PM intervals and dont worry about it.

 

[EdGs]

Traveling through SC on my way to NC the other day. Only loaded with us and luggage.

 

[grizzstang]

There was an engine oil cooler included on police package equipped 5.7 Rams - https://store.mopar.com/v-2012-ram-1500--st--5-7l-v8-gas/5-7l-hemi-gas-engine--engine-oil-cooler

I'm not sure how it all installs, haven't looked into it. The plumbing for the lower hose looks obvious enough it's a "T" with the radiator hose but the upper one is less obvious.

It also comes on Rams with all the towing options. I have it on mine and honestly my temps don't look any different from what others have posted here.

 

[indept]

As stated, that's fine. That will make water from blowby evaporate and get removed by the PCV system.

 

[EdGs]

View attachment 470309

Traveling through SC on my way to NC the other day. Only loaded with us and luggage.

Forgot to add:

2015 Ram 1500 SLT QC 5.7L 2WD, 125K miles. Stock. Bought in Sept. 2017 with 28.6 K miles. Running PP 5w-20 with Fram XG10060 filter, oil changes according to OCI, 15 oz. Lubegard biotek added on last 2 changes.

 

[danielmid]

Looking in to an oil cooler myself, hit 270-275 oil temp pulling the camper up some hills last weekend.

 

[CaptOchs]

My '13 runs around 235-243 while towing. However, I have hit some hills where the RPM is a sustained 3k. It gets up to around 250. I use Pennzoil Ultra full synthetic.

I have the 6-speed transmission. That runs cooler. The hottest that has gotten was 170 after long sustained hills at expressway speeds.

 

[1999 White C5 Coupe]

Forgot to add:

2015 Ram 1500 SLT QC 5.7L 2WD, 125K miles. Stock. Bought in Sept. 2017 with 28.6 K miles. Running PP 5w-20 with Fram XG10060 filter, oil changes according to OCI, 15 oz. Lubegard biotek added on last 2 changes.

What is the purpose of adding Lubegard biotech to the oil? Ram does not recommend an oil additive.

 

[BlownGP]

Installing a 180-degree thermostat will have no effect.

Once an engine thermostat opens at 180, 190 or 195 degrees (F) - it remains open as long as the engine is operating at or above the thermostat rating.

A lower temperature engine thermostat does not make the engine oil any cooler.

Yes it does. This is with a 180 T-stat.

I haven't towed anything yet, but it stays 195 in traffic and on the highway

 

[Burla]

My thermostat opens and closes all the time at 203, I bet 180 would make it run cooler, but I'm good as is, suits me personally.

The theory of running bioguard in warmer engine temps is solid, but the fact is there might not be enough base in that additive to actually provide protection from heat degradation when compared to an actual ester based oil is something to consider. For better hot protection you see the best base oil, for better cold protection you see pao cant be beat, but they also help in the heat above "mineral oil" most of us use. Why redline is a popular choice, a combo line 2 and 5 below, so in fact the oil wont break down in the extremes like the group 3 oils we see on the shelf. The hotter or colder you run a vehicle, someone can get more protection by using group 4/5 oils.

 

[Burla]

So the "yellow" zones are the formula base oil plus additives, but the additives are all temporary. The green zone is the natural range of that base oil. So back to the OP, the hotter you run is at higher risk the older your oil is. People running hot should change their oil more often, or consider trying high performance oil. 230f is not terribly bad, but you still might opt for more protection.

 

[Burla]

The one thing when oil gets hot the viscosity gets really thin, old oil loses vii's which were keeping that oil in grade in the first place. So it is a double whammy (new scientific term) the oil is thin due to the temp and thinner due to the loss of vii's. Which is why every credible recommendation for towing is to use a thicker oil to start with.

There are other charts, but you can see different weights in the temps we are talking about, the guy up at 270, well this chart tops out 284f, even 30 weight oil is viscosity of 5, close to water thin.

 

[Hemi395]

A 180 Tstat will lower your operating oil temps unless you’re under load. Driving around town in the summer unloaded with the 180 my oil temps were around 195. When I towed with it, my oil temps would be between 230 and 240 in the summer. Coolant temp would hover around 190 while towing with the 180 tstat.

Now that I’m back running the 203, the coolant temp stays around 205 or so and my oil temps are still between 230 and 240 while towing. But around town unloaded my oil temps hover around 210.