TRNW-2: 2017 6r140 diesel trans temp

[James Carter]

They have a cooler mounted to the front passenger side frame rail . They
also have a thermostat in the valve body .  Is this truck tuned ? I have
see some of the intercooler radiators [ not main ]
be low on coolant and cause overheating .

On Fri, Oct 3, 2025 at 3:25 PM Jim Bockus via trnw2 <trnw2 at trnw.net> wrote:

> I believe those have a separate coolant reservoir for the transmission
> cooler. I've followed a few shops with temperature concerns being related
> to this.
>
> On Oct 3, 2025 3:11 PM, Justin Merritt via trnw2 <trnw2 at trnw.net> wrote:
>
> Does anyone know what normal transmission temp should be for a 17 f250
> diesel 6r140?
>
> I have a new job show up today, and customer states temps run 230ish on 2
> lane roads 50-60mph. If he runs interstate normally around 220.  He says
> trans works just fine, but he is concerned of high temps.
>
> Justin
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