6.0 Trans cooler Why?
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Junior User
Joined: Oct 2012
Posts: 82
Likes: 0
6.0 Trans cooler Why?
What is all the hype about a 6.0 trans cooler.
I have a E99 350 with no trans cooler mods and have pull a 12,000 lb
5th wheel since 2001 and no problems from my trans.
I was thinking about putting an extra cooler on it and read about the 6.0
cooler mod and was just wondering why a 6.0 mod.
What is to keep you from going to the local parts store getting a trans cooler
kit with 3/8 line and mounting it along with the stock one.
Just trying to learn something thank for the replies.
I have a E99 350 with no trans cooler mods and have pull a 12,000 lb
5th wheel since 2001 and no problems from my trans.
I was thinking about putting an extra cooler on it and read about the 6.0
cooler mod and was just wondering why a 6.0 mod.
What is to keep you from going to the local parts store getting a trans cooler
kit with 3/8 line and mounting it along with the stock one.
Just trying to learn something thank for the replies.
Trying to Gain Knowledge
Joined: Jun 2003
Posts: 1,571
Likes: 2
From: Ezzell, TX
I am currently running a cooler from Jegs, that the Ford transmission tech told me to get when they replaced my transmission. It has been working wonderfully. My tranny doesn't record above 160 in the pan. But that isn't the best place to show temps, from what I have been reading. I have a scan gauge II now and will be using that over the summer to see where my transmission temps are at as compared to the pan temp.
The 6.0 cooler is supposed to do a better job of cooling if there is heavy towing going on is what I have gathered. I don't so what I have will work.
The 6.0 cooler is supposed to do a better job of cooling if there is heavy towing going on is what I have gathered. I don't so what I have will work.
Laughing Gas
Joined: Oct 2009
Posts: 831
Likes: 2
From: Vacaville, CA
What is all the hype about a 6.0 trans cooler.
I have a E99 350 with no trans cooler mods and have pull a 12,000 lb
5th wheel since 2001 and no problems from my trans.
I was thinking about putting an extra cooler on it and read about the 6.0
cooler mod and was just wondering why a 6.0 mod.
What is to keep you from going to the local parts store getting a trans cooler
kit with 3/8 line and mounting it along with the stock one.
Just trying to learn something thank for the replies.
I have a E99 350 with no trans cooler mods and have pull a 12,000 lb
5th wheel since 2001 and no problems from my trans.
I was thinking about putting an extra cooler on it and read about the 6.0
cooler mod and was just wondering why a 6.0 mod.
What is to keep you from going to the local parts store getting a trans cooler
kit with 3/8 line and mounting it along with the stock one.
Just trying to learn something thank for the replies.
Edit: I noticed you didn't mention if you have gauges... The stock trans temp gauge in the cluster on our trucks is worthless! Should try to keep trans temps under 220*
Lead Driver
Joined: Jan 2007
Posts: 6,708
Likes: 5
From: Kiowa CO
He has an E99 truck so no stock tranny temp gauge in the dash. That was an '02 and up change.
But the 6.0 coolers are huge compared to the stocker 7.3 coolers and being a person who had overheated and lost a tranny due to cooling issues, it's a no brainer to upgrade for me personally. Auto trannys love to stay within their operating range and when you overheat them, they will eventually give up the ghost. With that being said, a lot has to do with reg. maintenance of your truck and the terrain that you drive with your 5'ver also. Pulling loads in my altitude, it's worth it to upgrade.
Do you have a accurate trans temp gauge to monitor your temps? just curious.
But the 6.0 coolers are huge compared to the stocker 7.3 coolers and being a person who had overheated and lost a tranny due to cooling issues, it's a no brainer to upgrade for me personally. Auto trannys love to stay within their operating range and when you overheat them, they will eventually give up the ghost. With that being said, a lot has to do with reg. maintenance of your truck and the terrain that you drive with your 5'ver also. Pulling loads in my altitude, it's worth it to upgrade.
Do you have a accurate trans temp gauge to monitor your temps? just curious.
Cargo Master
Joined: Jul 2011
Posts: 2,663
Likes: 970
From: Walpole, MA
What is all the hype about a 6.0 trans cooler.
I have a E99 350 with no trans cooler mods and have pull a 12,000 lb
5th wheel since 2001 and no problems from my trans.
I was thinking about putting an extra cooler on it and read about the 6.0
cooler mod and was just wondering why a 6.0 mod.
What is to keep you from going to the local parts store getting a trans cooler
kit with 3/8 line and mounting it along with the stock one.
Just trying to learn something thank for the replies.
I have a E99 350 with no trans cooler mods and have pull a 12,000 lb
5th wheel since 2001 and no problems from my trans.
I was thinking about putting an extra cooler on it and read about the 6.0
cooler mod and was just wondering why a 6.0 mod.
What is to keep you from going to the local parts store getting a trans cooler
kit with 3/8 line and mounting it along with the stock one.
Just trying to learn something thank for the replies.
The 6.0 trans cooler is nice cause it is 2.5-3.4 (depending on which one you get) times larger than a 7.3 cooler.
If you do a lot of high heat towing it is a great mod. I did it and my oh my does it work well... but it is totally overkill. In the winter trans temps rarely crack 120 with my winter front on and sitting in bumper to bumper Boston traffic.
Post Fiend
Joined: Dec 2009
Posts: 15,505
Likes: 18
From: Livoina,La
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Cargo Master
Joined: Jan 2009
Posts: 2,800
Likes: 31
From: OKC, OK
The Derale tstat thread would be a good read.
In short if you tow a lot and heavy then you are more than likely getting your tranny hotter than the desired temp. The 6.0 cooler has a lot more surface area. It does a gray job at keeping the temps in check. However in the winter or when not towing it can cause the tranny temp to not achieve the desired temp. According to one of our members (a ford tech) the optimal temp for our trannys is 170*. Below this it is not as efficient and does not burn off the water. This is why the Derale tstat is also a good idea it opens between 170-180 then lets the cooler keep temps in check.
In short if you tow a lot and heavy then you are more than likely getting your tranny hotter than the desired temp. The 6.0 cooler has a lot more surface area. It does a gray job at keeping the temps in check. However in the winter or when not towing it can cause the tranny temp to not achieve the desired temp. According to one of our members (a ford tech) the optimal temp for our trannys is 170*. Below this it is not as efficient and does not burn off the water. This is why the Derale tstat is also a good idea it opens between 170-180 then lets the cooler keep temps in check.
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Joined: Sep 2003
Posts: 12,246
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From: Houston, Texas
The 6.0 does an impressive job of keeping the trans cool. Mine was installed after an accident in 2009 and in mostly hilly, plains San Antonio where it can get to 100 degrees plus in the summer time. It kept my trans surprisingly cool...
Fast forward to 2012 when I had to tow my Mom's car to a friend's place, it kept temps in check even with the hot summer weather and 11K behind me.
Fast forward to 2012 when I had to tow my Mom's car to a friend's place, it kept temps in check even with the hot summer weather and 11K behind me.
Thread Starter
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Junior User
Joined: Oct 2012
Posts: 82
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Thanks gentlemen. No gauges yet just joined the forum a few months ago and didn't know about really cool mods you could to these trucks. I have not done much to my truck in the 13-14 years I owned it execpt reg maintenance and that has recently bit me in the tail. 373k never replaced glow plugs and its been hard to start in cold weather so went to change GPs and one has swelled and will not come out now the head has to come off (ouch). But I am going to keep the truck (dont care what my wife says) so Im going to fix the problem and do the necessary mods. Im sure with all the great info from the good here I can keep it in great condition thanks again.
Fleet Mechanic
Joined: Dec 2010
Posts: 1,546
Likes: 9
From: Wellington, Co
Thanks gentlemen. No gauges yet just joined the forum a few months ago and didn't know about really cool mods you could to these trucks. I have not done much to my truck in the 13-14 years I owned it execpt reg maintenance and that has recently bit me in the tail. 373k never replaced glow plugs and its been hard to start in cold weather so went to change GPs and one has swelled and will not come out now the head has to come off (ouch). But I am going to keep the truck (dont care what my wife says) so Im going to fix the problem and do the necessary mods. Im sure with all the great info from the good here I can keep it in great condition thanks again.
Cargo Master
Joined: Mar 2006
Posts: 2,502
Likes: 2
From: Bend Oregon
What the heck does your mom drive? at 11k I am picturing a 66 fleetwood............
Mountain Pass
Joined: Sep 2009
Posts: 230
Likes: 1
From: Lower Mainland BC
Need for 6 L trans cooler
As noted by Mark in Derale thread if you have a miin trans temp of 170 deg F and under 225 towing heavy you do not need a 6 L trans cooler. If you do put one in you may need a thermastat so you have a min temp of at least 170 dg F to have optimum trans efficiency and avoid moisture collecting in trans fluid.
Thread Starter
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Junior User
Joined: Oct 2012
Posts: 82
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So first things first. Install trans temp gauge check temps in all driving conditions
then make a intelligent decision on the readings for my truck. That is some good advice
instead of jumping into a mod.
Thats one reason I like this forum so many good opinions it makes you think.
Something I'm not used to. Thanks again
then make a intelligent decision on the readings for my truck. That is some good advice
instead of jumping into a mod.
Thats one reason I like this forum so many good opinions it makes you think.
Something I'm not used to. Thanks again
