Transmission Cooler ??
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Junior User
Joined: Jan 2001
Posts: 60
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Transmission Cooler ??
I tow a 5th wheel weighing 9,200 # with my 02 F250 with PSD & auto transmission. I believe that the F250 comes from the factory with a transmission cooler. I have been considering adding an auxiliary transmission cooler. I was wondering if others pulling heavy loads have added aux. coolers, whether it is necessary, and if so, what type cooler is recommended.
Senior User
Joined: Oct 2002
Posts: 437
Likes: 3
From: Fayetteville (Atlanta) GA
Transmission Cooler ??
The cooler the better, in my opinion. The major thing to destory a automatic transmission is heat. I installed a Hayden 679 on my truck and never have seen trans temps higher than 185 degrees F, even in the summer towing a 7,000 pound travel trailer. You may also want to consider a good synthetic fluid, I use Mobil 1. Also consider a auxiliary electric fan. I use my fan anytime the forward speed drops below 35 mph, works like a charm.
Search the "Towing" forum, lots of discussion on trans coolers there also.
Mark
Search the "Towing" forum, lots of discussion on trans coolers there also.
Mark
Senior User
Joined: Oct 2002
Posts: 437
Likes: 3
From: Fayetteville (Atlanta) GA
Transmission Cooler ??
I believe the 4R100's have a internal thermal valve that only ports the fluid to the cooler when the fluid is warm/hot. Mark Kovalsky can you help us out please ?
Mark
Mark
Last edited by GAV10; Mar 20, 2003 at 09:32 AM.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,714
Likes: 2,640
From: SE Florida
Transmission Cooler ??
Originally posted by GAV10
I believe the 4R100's have a internal thermal valve that only ports the fluid to the cooler when the fluid is warm/hot.
I believe the 4R100's have a internal thermal valve that only ports the fluid to the cooler when the fluid is warm/hot.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,714
Likes: 2,640
From: SE Florida
Transmission Cooler ??
Originally posted by nafzimo
I notice on the really cold mornings that my TC doesn't lock up for about 4 miles. I assume that the computer lets it slip until the fluid temps warm up.
I notice on the really cold mornings that my TC doesn't lock up for about 4 miles. I assume that the computer lets it slip until the fluid temps warm up.
