Auto Transmission / Engine Oil Cooler Plumbing
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Auto Transmission / Engine Oil Cooler Plumbing

  1. #1
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    Sep 2011
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    Colton, CA
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    Default Auto Transmission / Engine Oil Cooler Plumbing

    Hi all,

    This question is directed at those who do (relatively) heavy towing with their light (1-ton) trucks.

    My truck is currently equipped with factory in-radiator oil cooler along with the typical factory in-radiator trans cooler combined with a small front mounted oil-to-air cooler. I am getting ready to install my new engine / transmission along with an upgraded cooling system. My questions are as follows:

    First, I have heard two schools of thought regarding plumbing trans/engine oil coolers. 1.) Plumb both the factory style in-radiator cooler and the oil-to-air in series. 2.) Omit the factory style in-radiator cooler and run only an oil-to-air cooler. Which do you prefer and why?

    Second, what are your thoughts on installing cooling fans on the oil-to-air coolers? Will fans make any difference to oil temps at towing speeds?

    Thank you in advance,

    Joe
    "I want to roll with my brother Joe" - Joe Bateman - January 29, 1950 ~ November 27, 2013

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  3. #2
    Member
    Join Date
    May 2008
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    49

    Default I'm no expert...

    But I am also in a similar situation and here's what I learned.
    Don't use the OEM cooler for the trans. Reasons were a few but the one I remember was something to do with too much system reduces pressure.
    I was told the best was a separate radiator for the trans with a fan. I chose the top of the line Setrab with two fans I think. I'll probably add some sort of deeper trans pan if I can find one that doesn't hang down too far into harms way.
    I ended up changing some other things to reduce temps under the hood as well. I changed my old headers out for a set of ceramic coated headers and underhood temps went down hundreds of degrees it seems. All the electronics under the hood are lasting longer now.

    In the end I am in the process of changing everything. I'd adding a larger AC cooler out of a huge truck for example and am have an offroad fabricator redo all of the structure up front so I can move the engine radiator over to make room for the Setrab. He will add a new aluminum radiator with fans and I will use Evans in the engine radiator. I may add some heat shields on top of the headers too. Spoke with some guys at Thorley headers and they had alot to offer. Spoke with a guy named Gary at eclipse Engineering several years ago and he also told me alot about it. Still, I feel like it's a complicated mess trying to upgrade these trucks as they come from the factory. Good luck and show some pics when you finish it.

    Quote Originally Posted by Flusher View Post
    Hi all,

    This question is directed at those who do (relatively) heavy towing with their light (1-ton) trucks.

    My truck is currently equipped with factory in-radiator oil cooler along with the typical factory in-radiator trans cooler combined with a small front mounted oil-to-air cooler. I am getting ready to install my new engine / transmission along with an upgraded cooling system. My questions are as follows:

    First, I have heard two schools of thought regarding plumbing trans/engine oil coolers. 1.) Plumb both the factory style in-radiator cooler and the oil-to-air in series. 2.) Omit the factory style in-radiator cooler and run only an oil-to-air cooler. Which do you prefer and why?

    Second, what are your thoughts on installing cooling fans on the oil-to-air coolers? Will fans make any difference to oil temps at towing speeds?

    Thank you in advance,

    Joe

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