Auto transmission temp?
Lead Driver
Joined: Jan 2006
Posts: 7,308
Likes: 250
From: Hartford, WI
I'd say. I was having about 65 above ambient when I am empty on my 01 Ex. I also had the 6.0L Cooler but that didn't do much for highway driving. It was stop and go that it helped the most. Since I have switch to a BTS trans, I am getting about 65 irrespective of what I do. The next week, I will be taking it to MN so I'll know if the 65 above ambient holds true. Before the 6.0 cooler, it was 65 above for unloaded and 100 above for loaded with an 8000# Toy hauler.
Thread Starter
|
Freshman User
Joined: Jan 2006
Posts: 49
Likes: 0
well this truck is on the road as we speak going from lubbock to houston and my friend just called me to see if i could find out something. he has had this truck 2 weeks he drove it from houston to lubbock at lubbock he installed, 4" t-back exhaust,edge juice,edge evolution programmer. Before he left houston he had the transmission serviced and had synthetic oil put in. he said everytime he stopped on the highway there was a puddle of tranny fluid. so on the highway running 74 the tranny oil temp is 203.
Posting Guru
Joined: Aug 2005
Posts: 1,768
Likes: 0
From: Central Alabama
On a typical 90 degree day I run about 165 with mixed driving(empty). When towing I run 180-200 depending on how many lights I have to stop for. Now that is with the factory tranny cooler. I've heard that the factory tranny cooler gets over-looked in most cases. Being that the cooler can get clogged and/or restricted.
Trending Topics
Logistics Pro
Joined: Nov 2002
Posts: 4,788
Likes: 20
From: Mansfield, TX USA
Originally Posted by aklim
75 to 85? Should it matter?
Aero drag force increases with the square of the speed increase, going from 65 mph to 75 mph increases the velocity contribution to the drag force from 9088.4 to 12100 (using ft/sec as the unit for velocity).
More drag = more work for the tranny.
Last edited by jschira; Jul 7, 2006 at 03:02 PM.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Logistics Pro
Joined: Nov 2002
Posts: 4,788
Likes: 20
From: Mansfield, TX USA
Originally Posted by helpfulguy
Before he left houston he had the transmission serviced and had synthetic oil put in. he said everytime he stopped on the highway there was a puddle of tranny fluid. so on the highway running 74 the tranny oil temp is 203.
BTW - Nobody runs at just 74 mph in W TX. Grandmas run 80 - 85.
Last edited by jschira; Jul 7, 2006 at 02:54 PM.
Freshman User
Joined: Feb 2005
Posts: 34
Likes: 0
RE: Tranny Temp
Hi all mine also seems to run high 200 a little hotter when towing my 5th wheel. I had the trans rebuilt by a trans shop 2k ago also had them install a tru cool 40K.Checked the install yesterday it's behind the a/c condensor.Thought the condensor might be dirty (full of bugs) so i washed it out will take it for a spin today.Thanks, Dan
Senior User
Joined: Jan 2004
Posts: 205
Likes: 1
From: Houston, TX
I've got a tru-cool on mine and I very rarely see anything over 150. Even towing our ~9k travel trailer this summer it didn't push above 150. I'm almost concerned my sensor isn't getting a correct reading.
Elder User
Joined: Aug 2005
Posts: 763
Likes: 0
From: Dallas, Texas
I just installed a second Aux cooler this weekend. I see 155-170 normal unloaded driving. With the 4K lb gooseneck (unloaded) I saw 180.
I just read an article stating that 175 is optimal for ATF. For every 20 degrees over 175 it cuts the fluid life in half.
It seems that most every vehicle (truck or car) see's 190-205 on a regular basis. Mostly because the fluid to fluid coolers are marginal at best. The only way to begin solving the "hot" issue is to choose a good Aux cooler. I read the bar and plate was more efficient that the tube and fin.
I just read an article stating that 175 is optimal for ATF. For every 20 degrees over 175 it cuts the fluid life in half.
It seems that most every vehicle (truck or car) see's 190-205 on a regular basis. Mostly because the fluid to fluid coolers are marginal at best. The only way to begin solving the "hot" issue is to choose a good Aux cooler. I read the bar and plate was more efficient that the tube and fin.
