Thread: 34 going up on jack stands for a while

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Originally Posted by Henry Rifle

- I have no heater and don't want one. All that stuff will have to wait until I solve the A/C fitment.

I'm curious, you are obviously living in a warm climate zone, why do you need to heat the tranny fluid instead of cooling it?


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Originally Posted by 36 sedan

I'm curious, you are obviously living in a warm climate zone, why do you need to heat the tranny fluid instead of cooling it?

Automatic transmissions require some heat to operate properly, and the temperature needs to be contained within a reasonable band. That's why OEM applications all run an HX in the radiator. The radiator gives the fluid the basic operating temp, and a trans "cooler" is added if necessary. Ideal operating temp recommended by my supplier is 160 - 175F. Anything over 175 reduces trans life.