6.4 Hemi oil temps

[amjones182]

For those running a 6.4 Hemi in a 2500 what are your average oil temperatures? In my truck was new I remember it running around 212. With 33,000 miles it is not uncommon for it to get up to 222 on a nice 80 degree day and up to 228 when towing my 6000 pound travel trailer. I have been unable to find the spec on what the Optimum range should be.

Sent from my SAMSUNG-SM-G930A using Tapatalk

 

[amjones182]

Coolant temp is around 210-212, trans is 168 and 53psi during normal driving.

Sent from my SAMSUNG-SM-G930A using Tapatalk

 

[Andrew09HEMI]

I'll have to look next time I'm driving and up to temp but keep in mind oil does a lot of your cooling so it'll be close to your coolant temps if not a tad higher. Again, I don't know what the norm is as I haven't checked mine but I will when I drive it today

 

[Swampfox]

I have seen it around 235 pulling trailer on long grades in the mountains. Cools back to 220s quickly after uphill climb. Normally 215 to 220 everyday driving

 

[Sandbox]

I want to say that mine runs around 220.

 

[RAM_Designs]

210-215* for oil
165-175* for tranny
Oil pressure in low-mid 50's, ~30 at warm idle.

 

[U&A]

Normal driving i have never seen over 218 oil on the hotest day in the summer. I have seen just slightly over 220 when pulling 10,000lbs.

Whe dont have much for hills though.

 

[Boudreaux]

Mine usually runs in the 220 range unloaded. I hit 228 yesterday with my truck pretty much maxed out on flat ground

 

[Shtty6point4]

Mine usually runs in the 220 range unloaded. I hit 228 yesterday with my truck pretty much maxed out on flat ground

Do you feel that’s normal? I’m about 222 on windy hills doing about 70

 

[U&A]

With the higher temp thermostats they put in the HD 6.4 the 220+ temps are normal.

You want lower temps the right way to do it is a lower temp thermostat. Maybe go with a 190 or something.

Personally im sticking with the stock one. My UOA comes back looking great so no need to change. In fact i HAD to chang my thermostat last summer and put an OEM back in.

Your oil needs to be in the 210+ range to burn of moisture and to let the add pack in the oil actually do its job.

Just an opinion from an old time syn thread bro-dozer. Dont see me there anymore tho.