F150 Ecoboost tranny temp

[saskrick]

I've been driving the new ecoboost trying to get some break-in mileage before I do any pulling. I have a question to the ecoboost owners with max tow, what is your tranny temp when cruising down the highway with no trailer?
Mine runs about 90-95C at 110km/h which seems way too high for me. I have 1100 kms on the truck now. For comparisons sake, my suburban in the same scenario is at 45-50C. Both have factory tranny coolers.
Thanks in advance.

[ddemme]

Mine runs in the 190-195F range whether I'm towing or not. I've been told that this is the normal range on these new trannys.

[TURBS]

Just as an example my 2500 Chevy Gasser never excedes 200 while towing
175 degrees if I use fan.

[ResQfrog]

I believe if you get under the truck and follow the transmission lines you will find that there is a thermostat unit in the lines. This allows the fluid to come up to temp faster and maintain that temperature. Better fuel mileage and shifting in cold weather.

[TURBS]

Originally Posted by rgmiller32

I believe if you get under the truck and follow the transmission lines you will find that there is a thermostat unit in the lines. This allows the fluid to come up to temp faster and maintain that temperature. Better fuel mileage and shifting in cold weather.

that would make sense ! but I would think no matter what you would always want is as cool as possible but hey maybe ford thinks they again have a better idea I bet not !

[win]

Originally Posted by ddemme

Mine runs in the 190-195F range whether I'm towing or not. I've been told that this is the normal range on these new trannys.

Wow thats smoken hot

[Herk7769]

Originally Posted by win

Wow thats smoken hot

yep, the times they are a'changin.
The fluid is different too.

[Gquist]

Originally Posted by rgmiller32

I believe if you get under the truck and follow the transmission lines you will find that there is a thermostat unit in the lines. This allows the fluid to come up to temp faster and maintain that temperature. Better fuel mileage and shifting in cold weather.

Yes, The transmission thermostat keeps the fluid around 200 degrees, This allows the fluid to flow to all the little needle bearings and bushings through the tiny passages transmissions have in them, keeping the fluid too cold is just as bad as too hot in cold climates, The fluid simply cannot reach the bushings quick enough to properly lube them when it is too thick, that is another reason for the synthetic fluid.

[TURBS]

Originally Posted by Gquist

Yes, The transmission thermostat keeps the fluid around 200 degrees, This allows the fluid to flow to all the little needle bearings and bushings through the tiny passages transmissions have in them, keeping the fluid too cold is just as bad as too hot in cold climates, The fluid simply cannot reach the bushings quick enough to properly lube them when it is too thick, that is another reason for the synthetic fluid.

even with the thermostat the fluid is still roughly the same as the outside temp and if its -20 f so is the fluid !
so for at least 15 minutes or more that fluid is still cold going through all those little needle bearing you mention . how does that help ?

[Gquist]

Originally Posted by f1100turbo

even with the thermostat the fluid is still roughly the same as the outside temp and if its -20 f so is the fluid !
so for at least 15 minutes or more that fluid is still cold going through all those little needle bearing you mention . how does that help ?

Yes it would be the same temp at cold start but because the fluid gets sucked through the filter into the pump, out to the cooler then it's first duty is the lube circuit in the transmission, Being it is just getting looped back to the trans before it goes up to the air to fluid cooler it warms up much quicker. The synthetic fluid is the biggest help for cold temps and extreme heat also.
Older Dodge trucks used to block out overdrive anytime the outside temp dropped below -20 for "Enhanced transmission durability" they installed retrofit thermostats on them as a service bulliten, then later ones came with the thermostats built in factory installed.

[crocus]

I put on a big enough cooler that my tranny temp never exceeds 160F. I sure wouldn't want it running anywhere near 200. But my truck is 'old school'.
I sure hope they are using some kind of fancy tranny fluid in those new Ecoboosts, as the old style fluid would never stand up to that..

[acadianbob]

Originally Posted by ddemme

Mine runs in the 190-195F range whether I'm towing or not. I've been told that this is the normal range on these new trannys.

X2.

[saskrick]

Thanks for all the responses. I realize that it is thermostatically controlled, but I just felt that 90c when its cool out was high. Especially since the new suburban runs at 50c in the same conditions. My previous yukon had no cooler and it ran around 75 on the hottest days. Maybe I'll give the ford guys a call and see what they say.

[acadianbob]

Originally Posted by saskrick

Thanks for all the responses. I realize that it is thermostatically controlled, but I just felt that 90c when its cool out was high. Especially since the new suburban runs at 50c in the same conditions. My previous yukon had no cooler and it ran around 75 on the hottest days. Maybe I'll give the ford guys a call and see what they say.

They're going to tell you "That's where they run; it's normal". I ran 199 today towing the Surveyor; only about 5 degrees above unloaded; trans temp needle didn't even get to "half way".

[snjparham]

2500 HD runs about 170 unloaded and 185 to 200 loaded. Usually only hit hi temps in the hills.

[acadianbob]

9 hours of towing today. Minneapolis to south of Kansas city. Trans temp 193 to 197 all day long. Same as unloaded.

[Gquist]

Awesome! I will be going that way at the end of the month,
Ford decided contol Transmisson temp just like engine temp, The transmission has large cooling pipes and it should have no issues with overheating, Time will tell though.

[Triathletedave]

I drove my new 2012 F-150 Ecoboost for a few hours on the highway this weekend, to Red Deer and back, and out to the mountains and back. On both trips (unloaded), the tranny temp maxed out at 90 degrees. From the previous thread, this sounds like the new normal for these trucks.

I'll be keeping tabs on it to see what the temp hits when we start towing though. The truck just turned 1,000 km, so we have a ways to go before we start towing anything!

[fonzie]

Originally Posted by Triathletedave

I drove my new 2012 F-150 Ecoboost for a few hours on the highway this weekend, to Red Deer and back, and out to the mountains and back. On both trips (unloaded), the tranny temp maxed out at 90 degrees. From the previous thread, this sounds like the new normal for these trucks.

I'll be keeping tabs on it to see what the temp hits when we start towing though. The truck just turned 1,000 km, so we have a ways to go before we start towing anything!

I presume you are saying 90 degrees celcius (194 F)?

[Triathletedave]

Originally Posted by fonzie

I presume you are saying 90 degrees celcius (194 F)?

Yup, we Canuckians have to use celcius and kilometers!