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normal trans temp?
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normal trans temp?
Tommorrow Im going to install a autometer 100-250 degree tranny temp gauge and was wondering safe temps to run it at I did a search on this and couldnt really find anything about it. I fear when I put it in it may tell me alot about the tranny that I dont want to know like maybe its been running to hot for a long time. In the next couple of weeks I will be adding the truecool this will probably help
Logistics Pro
Joined: Nov 2002
Posts: 4,788
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From: Mansfield, TX USA
Originally Posted by hedhntr
Tommorrow Im going to install a autometer 100-250 degree tranny temp gauge and was wondering safe temps to run it at I did a search on this and couldnt really find anything about it.
You can believe what Ford says; or
You can listen to Jimmy Jo Bob.
Let me know which one you trust, and I will give you the answer.
Logistics Pro
Joined: Nov 2002
Posts: 4,788
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From: Mansfield, TX USA
Originally Posted by PSNut
Without supplemental cooling the 7.3L cooler isn't cutting it for many towing applications.
Nut
Nut
There are a whole lotta people who believe anything over 180*F is too hot.
I have news for you. Ford never designed the system to maintain 180*F in all conditions. So yeah, in that case, Jimmy Joe says that you need more cooling.
Ford says different.
So who do you wanna listen to?
Lead Driver
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From: Hartford, WI
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Postmaster
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From: New Hampshire
Originally Posted by aklim
I'd go with BTS. They said not to worry till it gets over 210
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Postmaster
Joined: Jun 2005
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From: New Hampshire
Originally Posted by jschira
That, of course, depends on if you are talking to Ford or Jimmy Jo Bob.
There are a whole lotta people who believe anything over 180*F is too hot.
I have news for you. Ford never designed the system to maintain 180*F in all conditions. So yeah, in that case, Jimmy Joe says that you need more cooling.
Ford says different.
So who do you wanna listen to?
There are a whole lotta people who believe anything over 180*F is too hot.
I have news for you. Ford never designed the system to maintain 180*F in all conditions. So yeah, in that case, Jimmy Joe says that you need more cooling.
Ford says different.
So who do you wanna listen to?
Who cares what Ford says? I don't. I care about what works
based on direct experience. I trust fellow knowledgable forum members with direct dealings with Ford automotive
products over Ford.
Logistics Pro
Joined: Nov 2002
Posts: 4,788
Likes: 20
From: Mansfield, TX USA
Originally Posted by PSNut
I have news for you. Ford has their heads up their waazoo.
Who cares what Ford says? I don't. I care about what works
based on direct experience. I trust fellow knowledgable forum members with direct dealings with Ford automotive
products over Ford.
Who cares what Ford says? I don't. I care about what works
based on direct experience. I trust fellow knowledgable forum members with direct dealings with Ford automotive
products over Ford.
Logistics Pro
Joined: Nov 2002
Posts: 4,788
Likes: 20
From: Mansfield, TX USA
Originally Posted by PSNut
Not a problem...bring him on....probably knows more than
Ford by a long shot.
Ford by a long shot.
80hp chip
Yep. Stoopid Ford.
Jimmy Jo Bob knows better.
Logistics Pro
Joined: Nov 2002
Posts: 4,788
Likes: 20
From: Mansfield, TX USA
For those who might be interested, here is what Ford says about tranny temps.
Cold Range: 50° F or colder.
White Area: “Normal” operating range, 51° F to 248° F.
Yellow Area: “Warning”: Stop driving the vehicle or
remove auxiliary loads at the earliest
convenience. Typically, leave the engine
running at normal idle and allow to cool
into the normal range before starting to
drive or operate the PTO. The
transmission fluid is not over-heating, but
operating in the Yellow Range for
extended periods of time may cause
internal transmission damage.
Red Area: “Over-Temperature”: The transmission
fluid is over-heating. Stop the vehicle, do
not drive, and allow to cool into the
normal operating range. If the gauge
continues to show high temperatures
then see your Ford dealer.
For readings in the Red and Yellow areas, make sure
that snow or debris is not blocking airflow to the
radiator and transmission fluid cooler, that cooler lines
are not kinked or restricted, and that vehicle load
capacities or duty cycles are not excessive.
White Area: “Normal” operating range, 51° F to 248° F.
Yellow Area: “Warning”: Stop driving the vehicle or
remove auxiliary loads at the earliest
convenience. Typically, leave the engine
running at normal idle and allow to cool
into the normal range before starting to
drive or operate the PTO. The
transmission fluid is not over-heating, but
operating in the Yellow Range for
extended periods of time may cause
internal transmission damage.
Red Area: “Over-Temperature”: The transmission
fluid is over-heating. Stop the vehicle, do
not drive, and allow to cool into the
normal operating range. If the gauge
continues to show high temperatures
then see your Ford dealer.
For readings in the Red and Yellow areas, make sure
that snow or debris is not blocking airflow to the
radiator and transmission fluid cooler, that cooler lines
are not kinked or restricted, and that vehicle load
capacities or duty cycles are not excessive.
Logistics Pro
Joined: Nov 2002
Posts: 4,788
Likes: 20
From: Mansfield, TX USA
Additional info for those who care.
The following are excerpts from the SW Research Institute's standard qualifying test for MERCON tranny fluid. SWRI is an independent lab that anyone can hire to test things, particularly fuels and lubricating fluids.
Friction Durability test
115*C = 239*F
Cycling Procedure
135*C = 275*F
Read the whole test for yourself:
http://www.swri.org/4org/d08/Abstracts/Mercon.pdf
The following are excerpts from the SW Research Institute's standard qualifying test for MERCON tranny fluid. SWRI is an independent lab that anyone can hire to test things, particularly fuels and lubricating fluids.
Friction Durability test
Objective
The objective is to determine the friction
characteristics and friction durability of the
procedure fluid.
Procedure parameters
Fifteen thousand (20,000) cycles of 20 seconds
duration are required. Clutches are engaged once
each cycle absorbs 20,740 ± 100 joules of total
energy. Fluid temperature is maintained at 115ºC.
The objective is to determine the friction
characteristics and friction durability of the
procedure fluid.
Procedure parameters
Fifteen thousand (20,000) cycles of 20 seconds
duration are required. Clutches are engaged once
each cycle absorbs 20,740 ± 100 joules of total
energy. Fluid temperature is maintained at 115ºC.
Cycling Procedure
Objective
The objective is to determine friction retention,
oxidation stability, and corrosion protection characteristics
of a procedure fluid (DEXRON® III Cycling
Procedure).
Procedure parameters
Thirty-two thousand (32,000) accelerations through
the 1–2, 2–3, and 3–4 shifts are performed.
Transmission sump temperature is maintained at
135ºC. Engine speed, transmission output speed,
output shaft torque, and acceleration times are all
controlled during the cycle.
The objective is to determine friction retention,
oxidation stability, and corrosion protection characteristics
of a procedure fluid (DEXRON® III Cycling
Procedure).
Procedure parameters
Thirty-two thousand (32,000) accelerations through
the 1–2, 2–3, and 3–4 shifts are performed.
Transmission sump temperature is maintained at
135ºC. Engine speed, transmission output speed,
output shaft torque, and acceleration times are all
controlled during the cycle.
Read the whole test for yourself:
http://www.swri.org/4org/d08/Abstracts/Mercon.pdf
Last edited by jschira; Jun 16, 2006 at 01:40 PM.
