Forum Discussion
- Grit_dogNavigator^8HPs are designed to run at 200deg. Idk why, but I may be able to find out. Bottom line, picking a temperature and saying it’s unilaterally good or bad is not an accurate assessment.
- Grit_dogNavigatorWhat temps are the Ford 10 speeds supposed to run? That’s the real question.
- Cummins12V98Explorer IIIThose high temps with long change intervals would be concerning to me.
- Grit_dogNavigator
Cummins12V98 wrote:
Those high temps with long change intervals would be concerning to me.
Refer to my post above. How is it a concern if it’s designed to run those temps?
Do we really think a 10k trailer on a grade overheated the trans on a new Super Superdoody?
I’m not even a Ford guy and I believe it had to be operating within its design parameters.
Other transmissions run at 200+ light load by design. It’s not a stretch to believe this one does too.
What’s funny is with all the clock watchers on this forum and I’m sure plenty of them driving new Powerstrokes, no one else is concerned or has mentioned trans temps on these trucks?
(But I don’t watch those YooToob reviews. If I want uninformed opinions I just come here to this forum….) - 4x4ordExplorer IIII certainly wouldn't put just any old ATF in my Ford transmission but I have full confidence that if the transmission is designed to run hot, the synthetic fluid that is used in the transmission is designed to be able to provide the necessary lubrication at temperatures well over 230 degrees. If I've got the specified fluid in my transmission and no warning light is on I'm not going to be concerned regardless of whether or not I've got warranty on my truck. I guess hearing of all sorts of 10R140s burning up might change my attitude.
- Grit_dogNavigator^But you have common sense and some understanding of vehicles.
Most of the yapping here is just speculation or folks who like to read what they wrote…. - Cummins12V98Explorer IIII NEVER said it was overheated! FACT, transmission fluid lasts longer the cooler it's ran. Longer intervals on the change would be concerning to ME as I mentioned. Just my OPINION kids!!!
- HuntindogExplorer
Cummins12V98 wrote:
My Dmax doesn't even have a tranny dipstick. It runs in the 160s. I like that. I bet a lot of Ford guys have temperture envy. That's why they are sensative about it.
I NEVER said it was overheated! FACT, transmission fluid lasts longer the cooler it's ran. Longer intervals on the change would be concerning to ME as I mentioned. Just my OPINION kids!!! - 4x4ordExplorer III
Cummins12V98 wrote:
I NEVER said it was overheated! FACT, transmission fluid lasts longer the cooler it's ran. Longer intervals on the change would be concerning to ME as I mentioned. Just my OPINION kids!!!
You probably know a lot more about this than I do but my understanding is that the viscosity of an oil is tested at 210 degrees. Non synthetic oils can't spend much time at temperatures much over that without breaking down. On the other hand synthetic oils can be designed to handle far more heat and still operate at their rated viscosity....well over 300 degrees without any ill effects. I don't know much about this but if running high transmission temperatures required more frequent change intervals wouldn't Ford specify more frequent change intervals? - cummins2014Explorer
Cummins12V98 wrote:
RAM having adjustable spots is a waste of money as I set mine once to the furthest out position and never adjusted again.
My big concern for the FORD is the HOT transmission temps. I never see over about 172 pulling in near 100 degrees on long 6% grades. Most of the time I run 165-167.
Shows how dumb it is to do a leveling kit on a tow vehicle.
No denying it it has a ton of power!
I don't doubt the Aisin will do that if you say so ,the 68RFE will not running those long grades. I will see nearly 200 with my 68RFE , solo it runs a pretty consistent 172 , towing in hot weather it's a consistent 185-190 .
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From fifth wheels to teardrop trailers and everything in between.194 PostsLatest Activity: Jan 14, 2025