Trans temps again

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Apr 28, 2013 | 12:33 PM

hydro man 17

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From: Hat Creek Ca

Trans temps again

Did some around town driving on some hilly narrow roads yesterday. Fairly steep 30 - 40 MPH stuff and temps got to ~190 or so empty, 95* weather. Is this what should be expected?
Have not installed the 6.0 cooler yet but will soon. Just wondering if this should be considered "normal" under the circumstances.

Apr 28, 2013 | 01:37 PM

Chipworkz

Tuned

Joined: Oct 2011

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190* is no problem at all. Mark has said that the optimal operating temp is 170*. I got up to 210* with my empty truck running up the freeway here by my house. I did put on the 6.0 cooler and now I normally run down around 150 or 160. It makes a big difference but for you, I wouldn't worry about 190* when running on stepper hills. If you are planning on towing, watch the temps and you may need to put in the 6.0 cooler.

Apr 28, 2013 | 01:45 PM

r-kid

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Joined: Jul 2004

Posts: 180

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From: st.petersburg, fl

Chip,do you use a thermostat with the 6.0 cooler? I am thinking about going to the 6.0 and some people here think the thermostat is necessary . Otherwise your tranny temps stay to cool.

Apr 28, 2013 | 02:43 PM

cuttn4fun

Mountain Pass

Joined: Apr 2012

Posts: 142

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From: Nashville TN

Quote:

Originally Posted by r-kid

Chip,do you use a thermostat with the 6.0 cooler? I am thinking about going to the 6.0 and some people here think the thermostat is necessary . Otherwise your tranny temps stay to cool.

That is the same question I have. I have looked at a tru cool unit that has a by pass and wondered if that was the best route to go. To by pass or not to by pass, that is the question...

Apr 28, 2013 | 03:26 PM

r-kid

Senior User

Joined: Jul 2004

Posts: 180

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From: st.petersburg, fl

I have read on this forum that the 6.0 is better than the tru cool. I am ready to upgrade just need to find the best deal on the cooler and if the thermostat is a must.

Apr 28, 2013 | 08:01 PM

Mark Kovalsky

Frmr Ford Trans Engr

Joined: Aug 1999

Posts: 24,734

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From: SE Florida

Not only are those temps normal, but at those ambients and those conditions I'd say you're on the low end of normal.

The 6.0L cooler is WAY better than a Tru-Cool.

Apr 29, 2013 | 01:34 AM

1L243

Laughing Gas

Joined: Aug 2003

Posts: 836

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Imagine what your temps would be if you were towing heavy with those conditions.

I installed my 6.0 cooler for those days when outside air temps are in the 90's and towing 11,000 lbs....

Your 190 degrees is in the safe range. But, if you tow, I would get that 6.0 cooler.

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Apr 29, 2013 | 06:54 AM

HKusp

Lead Driver

Joined: Jun 2007

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From: Hampton, Maryland.

You don't have to. I would venture to say millions of miles have been logged towing, by guys with a 6.0 tranny cooler in a 7.3 without a thermostat, with very few issues.

Apr 29, 2013 | 12:46 PM

#10

hydro man 17

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Joined: Oct 2012

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From: Hat Creek Ca

Thanks guys. This is what I was hoping to hear Mark, I am aware that 190* is plenty OK but it seemed that it did not cool back down very fast when we got back on flat ground. But like I mentioned it was pretty warm weather. It will be up in the 100"s pretty soon in NE Cal so my next set of days off will be the 6.cooler install.
Mike