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02 d-max/Allison I am installing a haden high flow 3/4 cooler, what do you think about eliminating the radiator from the trans cooling system,& does anyone know which line is supply / return . I pull a 15,000 toy hauler amongst other heavy things and the trans gets hot 7000mi on last trans service and the fluid is very dark does not smell like clutch material but obviously got to hot, trans shifts fine but need to get that cooler in i would appreciate your opinions thanks
 

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The radiator cooler helps warm the trans fluid in the cold winter. I would keep it connected.
 

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Welcome to the forum


- Adam
 

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Welcome to the forum
 

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02 d-max/Allison I am installing a haden high flow 3/4 cooler, what do you think about eliminating the radiator from the trans cooling system,& does anyone know which line is supply / return . I pull a 15,000 toy hauler amongst other heavy things and the trans gets hot 7000mi on last trans service and the fluid is very dark does not smell like clutch material but obviously got to hot, trans shifts fine but need to get that cooler in i would appreciate your opinions thanks
The heat exchanger in the radiator does the initial heat knockdown for the trans fluid and is critical. Below 35mph there is not enough airflow to cool the air to oil cooler. If you eliminate it, you will not like what happens next.
 

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Discussion Starter #6
That was my initial thought, however i have heard people claim there trans runs cooler without it,I even saw someone claim the engine & trans running cooler. but some people say and post what they think not what they know. so I think that I will keep it in the loop. thank you for the insight.
 
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