Trans cooler

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Mar 6, 2017 | 01:50 PM

56Jimmy

Thread Starter

Mountain Pass

Joined: Feb 2017

Posts: 109

Likes: 21

From: Newalla, Oklahoma

Trans cooler

Ok y'all here's an easy one. I bought an auxiliary trans cooler with a thermostat controlled fan. Does it matter which line I cut into for the install?

Mar 6, 2017 | 02:09 PM

BPofMD

FTE Legend

Joined: Jul 2005

Posts: 65,938

Likes: 1,432

From: Millersville, MD

Ain't easy if we don't know what cooler it is and where it's going??????? If it don't make a difference neither does it make a difference what wire you cut.

Mar 6, 2017 | 03:05 PM

56Jimmy

Thread Starter

Mountain Pass

Joined: Feb 2017

Posts: 109

Likes: 21

From: Newalla, Oklahoma

Sorry not enuff info. I need to to know if it makes any difference which fluid line I cut into. The steel OEM lines going from trans to factory cooler

Mar 6, 2017 | 08:49 PM

Mark Kovalsky

Frmr Ford Trans Engr

Joined: Aug 1999

Posts: 24,695

Likes: 2,616

From: SE Florida

On a 2005 6.0L I suspect that an additional cooler is going to increase cooler line restriction, which will reduce cooling capacity.

How hot is it getting without this cooler?

Mar 10, 2017 | 09:07 PM

BII Plow Truck

Elder User

Joined: Aug 2006

Posts: 634

Likes: 2

Quote:

Originally Posted by 56Jimmy

Ok y'all here's an easy one. I bought an auxiliary trans cooler with a thermostat controlled fan. Does it matter which line I cut into for the install?

A trans cooler should be after the factory built-in cooler in the radiator.

Hot fluid goes out the transmission, through the built-in cooler, out to the auxiliary cooler, and back to the transmission. You need to find out which line is supply, and which line is the return. Google is your friend.

Mar 11, 2017 | 05:36 PM

69cj

Hotshot

Joined: Jul 2005

Posts: 13,834

Likes: 25

From: Middle Tn.

I'd advise you listen to Mark when it comes to the torque shift tranny. It'll save you some money and heartache. Just sayin!

Mar 11, 2017 | 07:59 PM

mrgrayaz

More Turbo

Joined: Sep 2016

Posts: 618

Likes: 6

We regularly tow heavy with our 05 6.0. - 16k GVWR 5th wheel.
Transmission cooling is simply not an issue in this truck.

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Mar 12, 2017 | 11:42 PM

Thor'sHammer

Laughing Gas

Joined: Sep 2013

Posts: 1,031

Likes: 13

Quote:

Originally Posted by 56Jimmy

Ok y'all here's an easy one. I bought an auxiliary trans cooler with a thermostat controlled fan. Does it matter which line I cut into for the install?

Return it. The 5R110 has the best cooling of basically ANY automatic transmission. The cooling system for the transmission behind a 6.0L is actually used as an UPGRADE to most other trucks.