I have a 2008 F150 super crew with a 5.4L with 373 gears I am using an edge power programer. Since I started monitoring the transmission temp when pulling my travel trailer I have been a bit concerned with the temperatures? When I'm driving in town or on the highway without pulling a trailer the trans temp is usually around the 140-150 degrees and to me that seems perfectly normal.When I pull my travel trailer on the highway the temp is around the 170-180 degree mark when I get into the hills the temperature gets up to the 190-200 degrees and what I have read this is when the issues start? I have been looking around the internet thinking about adding a extra transmission cooler the problem is I am not convinced 100% that this will solve my issues or further more do I even have issues at these temperatures? Because I have 33000 kms I plan on getting the trans fluid and filter changed but should I be doing anything else?

 

As far as I know, 150-180 is normal. Under load/towing your going to see higher temps. Ive never used an aftermarket cooler but lots have seen good results and lower temps with certain ones. Changing the fluids is probably a good idea but doubt just new fluid alone, it will lower your temps but by maybe a few degrees.

 

Hi-Tek Automatic Transmission Cooling System 13-1/2"x9"x3-1/2" with 9-1/2" diameter fan


* Fin and plate cooler construction
* Includes 12 volt high flow fan
* Pressure tested to 200psi
* Units include 1/2 NPT fittings & thermal switch
* Easily adaptable to steel braided lines

The newest addition to B&M's line of SuperCooler fluid coolers is the Hi-Tek cooling system. Fitted with a high quality 12 volt electric fan and built-in mounting brackets, these coolers handle tough cooling jobs. They include a thermal switch to activate the fan when the fluid temperature reaches 175 degrees F. Can be used for racing, RV and street performance vehicles. Suitable for all fluid cooling needs including: automatic transmission fluid, engine oil, differential fluid, power steering and tubrocharger oil in circle track, road racing, off-road, tractor pulling and monster truck applications.


FEATURES
■ Fin & Plate design
■ All aluminum construction
■ Oven brazed construction
■ Small & efficient design
■ Includes 12 volt, high flow fan

BENEFITS
■ Strong, durable cooler core
■ Lightweight cooler cores
■ Permanently bonds all mating surfaces
■ Creates own airflow to improve efficiency

■ Ideal for the toughest cooling applications
■ Thermal switch included activates fan at 175o
■ Coolers fitted with 1/2” NPT fittings easily adaptable to AN fittings
● XRP-6 straight fitting #981668, 90 degree #982268 or 45 degree #9823689, XRP-8 straight fitting #981688, 90 degree #982288 or 45 degree #982388

 

Is it true that the ford factory cooler on a trailer tow package does not circulate until 180 degrees

 

Not sure on circulate part @ 180*, but your temps sound in line with mine...

The time to worry is when it's staying at 220* or above for long periods of time.

Those fan type of coolers usually don't kick on the fan until @ 180* or so..

Your truck has a pretty large stock cooler and is more then sufficient and your temps indicate that. I've got a smaller cooler and it keeps me in check. I thought I needed a larger cooler when I first got my temp gauge as well! I was told that unless you are seeing higher temps for longer periods of time, then you may need a larger cooler.. That was over 7 years ago and I've not cooked the trans yet!

Also, I would NOT get another cooler in line with your stock one.. If needed, get a single, larger one.

Mitch

 

I've driven my truck out on the beach sand and if I push it at all, I can smell the trans fluid. So, I take it very easy when on the beach. I've noticed other trucks on that same beach. If they travel the 4 miles of beach fairly fast, when they come back their trans fluid is smelling. If I towed something heavy in the mountains or if I wanted to get aggressive at all on the beach, I would install a larger cooler. On the sand, the type with the fan would be a good choice. If you are moving at a good speed the fan should not be needed or at least that is my thinking.

 

i be lieve those are pan temps- not a true indication of the trans fluid itself, pan acts like a heat sink- put a mag hytek double deep pan on it

 

I agree with Open Class Pro. I bought a Mag Hytec for mine.